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Matter Standard: A Guide for Engineers

Chris Oddy — Thu, 02 May 2024 14:15:42 +0000

Matter Standard: A Guide for Engineers

One of the topics that is regularly brought up surrounding IoT devices and technology is the issue of security. A range of different standards have been brought in to control and improve this, and one of these which is getting a lot of attention at the moment is the Matter protocol.

Matter is a standard for smart home technology that has been framed as a potentially transformative development for both customers and manufacturers. It stands to act as a way of integrating a wide range of devices no matter their brand, allowing total control and synchronisation of technology that uses the Internet of Things in our homes.

Whilst Matter is still in its relatively early stages, it has been adopted by some huge brands in the smart home technology industry and made a very positive impact with what it can do. If you’re an engineer or developer working with IoT technology for consumers then you may likely have already heard of Matter, or even have started to integrate it into your work already.

In this article, we explain what Matter is, what the advantages of this protocol are, what kinds of devices it is compatible with, and what engineers need to know about Matter.

What is the Matter Standard?

Matter is a standard for smart home technology that aims to simplify and standardise the different devices so that they can all communicate, no matter their brand or model. It was developed by the Connectivity Standards Alliance (CSA) which is an organisation that aims to support the development of IoT technologies through standardisation.

This isn’t a new system for smart house technology, but a protocol that runs over existing protocols like Threads and Wifi, using Bluetooth Low Energy when you’re setting a new device up. Matter is also an open-source, royalty-free standard, making it accessible to a wide audience.

Matter began development around 2020 and the first version of the protocol was launched at the end of 2022 for devices like smart plugs, lightbulbs and sensors. In May 2023, Matter 1.1 was released to mainly fix bugs in the standard, and in October 2023 the release of Matter 1.2 added nine new device types to the standard, including robot vacuums, fridges and smoke alarms.

What makes Matter different from previous standards and initiatives is that it was developed by many of the big names in IoT home devices, including Apple, Google and Amazon. This means that the standard has been very successful in being rolled out because it has been integrated into products like Amazon Alexa, Apple Home and Google Home, which were already widely used.

By using Matter, home automation becomes a lot easier for users because their devices can all communicate and work more efficiently together, regardless of their brand. You also don’t need an internet connection for your devices to work together, as they can all be controlled locally instead once they are connected.

The Advantages of Matter

One of the main advantages of the Matter protocol is that it has been widely adopted by over 550 tech companies, including some of the biggest names in the industry. This means that many of the most popular smart home devices have adopted the standard, which not only increases its usage but also acts as greater encouragement for other brands to get on board.

The versatility of Matter links to this advantage, but is an advantage in itself because it applies to a range of different devices, regardless of their manufacturer. This makes it easy for consumers to set up and use their own group of smart home devices without having to buy products which are all from the same brand, allowing for greater customisation and ensuring high safety and quality no matter the product.

One of the key features and purposes of Matter is that it improves the overall security of IoT home devices, which is an advantage for everyone. Customers have less to worry about regarding the security of their devices, and developers will have fewer security-related issues to solve during and after the development process.

Having a standardised safety protocol for a lot of common smart home devices means that customer support can be centralised, which benefits all of the brands involved. Not only does the Matter protocol reduce issues with set-up, connectivity and compatibility, causing fewer issues for customers, but it also means that it’s easier for customer support employees to solve issues because of the common, underlying protocol.

From a consumer perspective, an advantage of the standard is that it makes the setup process of Matter enable devices much more straightforward. As long as devices are all connected to a home network and you have an app as an admin point, all products can be viewed and controlled through a simplified system.

From a design and manufacturing point of view, the Matter protocol makes it much faster and easier to ensure compatibility with other devices. This process would previously have been very long and costly, requiring a range of certifications. With Matter, engineers just need to make sure that their devices are aligned with this standard and they’ll be able to work in parallel with all others that are also set up for Matter home automation.

Another benefit of the Matter for smart home standard is that using it can help to lower development costs for products, which is a significant advantage for manufacturers. This is because having a shared security and connectivity standard makes it possible for infrastructure components like open-source drivers and libraries to also be shared between companies and developers, reducing the need for some engineering tasks. App development can also be reduced because of common service discovery and device-setup mechanisms, which again lowers development costs and in turn, leads to more affordable products for consumers.

What are Matter Compatible Devices?

The release of Matter 1.2 expanded the number of compatible smart home devices that the standard applied to. The current categories of devices supported by the Matter standard are:

Plugs and outlets
Light bulbs
Light switches
Sensors
Locks
Garage door controllers
Thermostats
Blinds
Media devices
HVAC controllers
Smoke and CO2 detectors
Robot vacuum cleaners
Fans
Fridges
Air purifiers and quality sensors
Dishwashers
Washing machines

The CSA plans to release two new updates to the standard each year, with categories like EV charging, security cameras and energy management devices next in line as devices to be integrated with the protocol.

As an engineer, understanding the types of devices that are compatible with Matter is important, as this is a widespread security standard that will likely inform your work. Whilst a lot of the news and content surrounding Matter and its release focuses on how well-known brands like Apple, Google and Amazon are creating Matter-compatible devices, plenty of smaller companies are following suit. If you’re involved in the production of IoT home devices, this is likely a protocol you will need to get to grips with.

What Engineers Should Know About Matter

Whether you’re already developing devices that are compliant with the Matter protocol or you’re considering how you can get your work to integrate with it, there are a range of technical details and ideas that can be valuable for engineers to understand.

Firstly, as an engineer you will need to know the basics of Matter’s data model. The main components involved are Nodes, Endpoints, Clusters, Attributes, Commands and Events. The majority of interactions in Matter happen between Nodes, and the Endpoints that these contain are what give Matter its built-in DFU/OTA.

From a security perspective, Matter encrypts and decrypts device communication using a range of different methods. When the controller and device are going through the commissioning process they share a set of key pairs called a Fabric to facilitate secure communication. Whenever a new device is commissioned by a controller it is added to the fabric and made secure.

Moving on to more practical considerations for engineers working with Matter, a range of different hardware from a variety of brands runs Matter, which is great if you have a particular chip or development kit you like to work with. As Matter’s popularity grows, more manufacturers are likely to create hardware that is compatible with the Matter protocol, so from a design perspective you have plenty of options when choosing where to get your hardware from.

If you work with technologies like Zigbee, BLE, Bluetooth Mesh, and Z-Wave it’s possible to operate these devices like they were a Matter device. You can do this by using a specific bridge device or by simultaneously running your current device and Matter stack. This means that, even if you’re not producing devices that run on Matter, you can adapt the code by integrating the protocol and bridge the two networks together.

When you create a matter-supported device, you need to integrate open-source protocol code into the code that makes the device run. If you’re new to open-source software development then this may be challenging, so you’ll need to be prepared to deal with this specific feature of Matter devices.

Finally, be aware that your device must support one of either Bluetooth, Wifi, Ethernet or a radio running Thread through IEEE 802.11.15.4. Devices which can only support Bluetooth and not also run the Thread stack will not work with Matter.

Summary

The current discussion around Matter and Matter-enabled devices is overwhelmingly positive. Many developers, manufacturers and consumers view it as the future of smart home technology, and its potential to connect all kinds of devices regardless of their brand and improve customer experience is certainly promising.

The protocol is still in its relatively early stages however, and whilst many categories of smart home technology are now supported by Matter, more complex devices are yet to be aligned. It’s certainly an exciting prospect for engineers working in consumer IoT technology and will impact various areas of work, so it’s worth keeping up to date with the latest Matter developments in order to stay informed.

If you’re an engineer looking for job opportunities to work with protocols like Matter, we’re a specialist electronic embedded systems recruitment agency that can help. Take a look at our current IoT job opportunities or get in touch to speak to the team about the kind of role you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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What is the Difference Between C and Embedded C Programming?

Chris Oddy — Thu, 28 Mar 2024 10:25:39 +0000

What is the Difference Between C and Embedded C Programming?

C is one of the most popular and widely used programming languages by developers across a wide range of industries, with applications in all kinds of projects from operating system development to embedded software. But whilst C is sometimes used by programmers working with embedded systems, an extension of the language has been specifically designed to provide optimised efficiency and function, called embedded C.

Embedded C is essentially an extension of the C programming language, so it’s understandable why the two often get confused. In this article, we’re going to be exploring the difference between C and embedded C to better understand what makes each unique, and then discuss which language is better suited for different kinds of projects.

What is C Programming?

C is a classic general-purpose programming language that was created in the 1970s at Bell Labs. It’s a low-level, procedural coding language that is used in a wide range of projects, including game development, creating system or application software and designing desktop programs.

C programming is considered to be quite straightforward due to the language’s simple syntax, and its structured nature also means that modifying and maintaining code is simple. It’s been used for developing embedded software for a while thanks to being low-level and very efficient.

Advantages of C

Here are some of the key advantages of programming in C.

Simple keywords and an easy-to-understand syntax
C is a portable language, so can be used across different operating systems
Testing and debugging in C is generally considered to be quite straightforward
C is well-suited to handling complex graphics and sound
Execution speed and memory usage are both very efficient
The low-level features of C make it a very flexible language
C is an established programming language, so the community of support is good

Disadvantages of C

On the flip side, here are some disadvantages of using C as a programming language.

Object-oriented programming is not possible in C, which is why C++ was developed
C isn’t that beginner-friendly, as it requires a complex understanding of memory management and hardware
There’s no strict type checking
Some important high-level features are missing, such as garbage collection
The direct manipulation of memory through pointers means that C software can be more vulnerable to security issues

What is Embedded C Programming?

Embedded C is an extension of the C programming language that was created specifically for software that is used in embedded systems. Its syntax and semantics are typical of C programming languages but it uses several additional features that cater specifically towards embedded systems functionality.

Embedded C programming is often used by developers who are familiar with C as a coding language but need to create a program or application that is tailored to the needs of an embedded system. It’s one of the best languages for embedded systems because it has been designed specifically for this kind of technology.

Advantages of Embedded C

Here are some of the key advantages of using embedded C.

Embedded C is a very efficient language, which is essential for embedded software where resources are limited
Code can be reused, which makes programming a quicker process
Like with C, code written in embedded C is portable across different operating systems
Being low-level means that embedded C code offers very precise control over hardware
Features of embedded C code make it ideal for real-time applications

Disadvantages of Embedded C

Whilst embedded C is tailored to embedded software it does have some disadvantages for programmers.

You have to already be familiar with C as a programming language to understand how to write software in embedded C
There’s no standardisation of embedded C
Common high-level features you’ll find in other programming languages are not present in embedded C
Vulnerabilities related to memory management are more likely
Scaling code in embedded C is difficult and time-consuming

What is the Difference Between C and Embedded C?

Perhaps the biggest and most defining difference between C and embedded C is that the former was designed as a general programming language, whilst the latter was specifically created to be used for developing embedded software. But there is also a range of other defining differences on the topic of C vs embedded C, which we’ll explain below.

Hardware Dependency

Hardware dependency refers to whether a piece of software has been designed for a specific type of hardware, and is one of the key ways in which C and embedded C differ from each other. Embedded C is a fully hardware-dependent programming language, whilst C is hardware-independent and doesn’t need a specific compiler or operating system to run on.

Scalability

Scalability is a key consideration when it comes to choosing a programming language, as being able to easily expand and develop an existing piece of software can be a massive time-saver for developers. Whilst C is a programming language that is quite easily scalable, making it easy to add new lines of code without impacting the performance, embedded C is not very scalable because it has limited memory and processing power.

Programming Style

C’s programming style is based on general-purpose software development, whilst embedded C programming is much more focused on embedded software. This means that additional keywords and features are part of the programming style for embedded C that you won’t see in general C code.

Another aspect of programming style that is a difference between C and embedded C is the formatting style. Programs written in C can have a free format where the developer has more choice in how they want the code to be formatted. But because embedded C software is hardware-dependent, it has to be written in a more structured style depending on the microprocessor that is being used in the embedded device.

Memory Usage

In comparison to the computers that most software runs on, embedded systems have quite limited memory available. Therefore, another difference in embedded C vs C programming is that software written in embedded C has to use memory very efficiently so as not to overwhelm the device or impact its performance. C software on the other hand is designed with large amounts of processing power in mind.

Processing Power

Leading on from that last point, another important difference between C and embedded C programming is that the processing power of embedded devices is always much more limited than that of larger computers that general software runs on. Therefore, embedded C code differs from code written in C because it is designed to be more efficient whilst using less power.

Standard Libraries

As we’ve already covered, there’s a much wider range of applications for C programming than there is for embedded C. Therefore, the size of the standard libraries available for C software is much larger, giving you a lot more options that can complete a wide range of tasks. In comparison, the standard library for embedded C is quite limited and only gives you essential functions.

Interrupt Handling

Interrupt handling is a function of real-time software, which embedded systems often use as part of their function. Embedded C programming includes features that are designed for interrupt handling, whereas if you are trying to do embedded programming in C, you’ll have to manually write custom code to handle interrupts.

Compilers

When you’re looking at compilers for C vs embedded C, there are a lot more compatible compilers to use for software written in C. Embedded C software compilers are only available for particular platforms which limits the number of platforms that embedded C programs can be run on, relating to the fact that this kind of embedded software is device-specific. The files generated by embedded C compilers are hardware-specific, whilst the output of a general C compiler is much more versatile.

Bug Fixing

The difference between C and embedded C is related to the programmer’s experience rather than the code itself, but it’s generally considered to be much harder to fix bugs in embedded C code than it is for code written in C. This is potentially because embedded C is a much more specific and therefore more complex programming language, so editing it and highlighting the causes of error requires more knowledge and familiarity with the language.

When to Use C and Embedded C

Now that we’ve discussed the main differences between C and embedded C, the final topic of this blog post is about when to use C for programming and when to use embedded C instead. The good thing about choosing between these two programming languages is that the tasks they were each designed for make it easier to assess the projects they are better suited for.

The embedded C programming language was designed specifically with embedded systems software in mind. Therefore, if the project or task you’re working on involves an embedded system, embedded C is an excellent choice that will make the whole development process much better.

Of course, other programming languages are also tailored for embedded software development. If you’re unfamiliar with C as a language then trying to learn embedded C for a project might be a time-consuming challenge, so bear this in mind if you’re trying to choose the best programming language for an embedded software project.

If you’re programming systems or applications that require complex software, C is a much better choice. As a general-purpose language, C has a much broader set of potential applications and so is better suited to operating systems, database management systems and 3D film development. If you’re developing an application for a general-purpose computer or any device or machine that requires a large amount of processing power, then C is much better equipped to handle this.

To summarise, embedded C is best suited to developing low-level firmware and applications that are optimised to run on limited memory and processing power, which is why it’s so perfect for embedded systems. C is the better programming to use when you’re working on larger projects involving more complex software, although it can also be used to create embedded software.

Summary

Using C programming for embedded systems is an approach that is successful for many developers, but with the creation of embedded C came a specific programming language option that was designed to help create the best possible embedded software and firmware. If you’re a software developer or engineer who works with embedded systems and devices, understanding the difference between the two languages and what they can both be used for can help to make sure that you’re using the right approach in embedded software projects.

If you’re an embedded software developer or embedded systems engineer looking for your next job opportunity, KO2 is a specialist recruitment agency that can help. Take a look at our current embedded software engineering roles or get in touch to speak to the team about what you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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The Best Skills for Embedded Software Engineers

Chris Oddy — Thu, 29 Feb 2024 11:12:51 +0000

The Best Skills for Embedded Software Engineers

The role of embedded software engineer is a niche position in the industry sector that requires a specific set of skills. Many candidates begin their careers as general software developers and then specialise in embedded systems, granting access to a really interesting area of software engineering that has plenty of potential for innovation.

If you’re thinking of becoming an embedded software engineer or are a software developer wanting to specialise, there are plenty of skills that will benefit you in this role. In this article, we share some of the best skills for embedded software engineers, covering technical abilities and soft skills.

Embedded Systems Design

Undoubtedly one of the most important skills required for embedded software engineers is embedded systems design. If you’re going to succeed in this industry sector you must understand the principles and patterns that are used to design embedded systems, as this will inform the programs you develop and the efficiency of these.

Elements of embedded systems design that you’ll need to be skilled in include selecting suitable and compatible hardware, scaling software, embedded programming languages and their advantages and disadvantages, and designing the software that the systems run on.

Programming Languages

Every software engineer needs to have programming language proficiency, and embedded software development is no different. Low-level languages are most popular for embedded software engineering, but certain languages are better suited to certain projects, so experience with multiple languages is ideal.

Some of the best programming languages for embedded software development include C, C++, Assembly language and Python. C++ proficiency is one of the most desirable skills of a software engineer in the embedded systems sector, but Rust is an up-and-coming contender that is also popular amongst employers.

Internet of Things (IoT)

The Internet of Things (IoT) is a rapidly developing system of connected devices that are used in a wide range of applications and devices in our everyday lives. Embedded systems and devices are an integral part of the Internet of Things, so one of the important skills needed for embedded software engineers is IoT knowledge and experience.

If you’re working on an IoT project, you’ll need to be confident in understanding how your embedded software and the device that it is for are connected to a wider network of devices and what is required to make your software compatible. Other internet-based technologies may play a part in this, so familiarity with these is also very useful.

Microcontroller Knowledge

Microcontrollers are the components that your embedded software will run on. An important part of embedded software engineering is being familiar with this electronic technology and knowing how to choose the best microcontroller for certain applications.

Having a good understanding of microcontroller architectures, power and memory management, programming and peripherals will put you in a great position to create software for specific devices that works perfectly with the firmware. This knowledge is one of the key skills for embedded software engineers, particularly when you’re doing low-level programming.

Understanding of Real-Time Operating Systems

A real-time operating system (RTOS) has become a popular alternative to single main loop programming in embedded systems thanks to its multitasking abilities. One of the embedded systems-specific skills needed for software engineering is familiarity with the elements involved in RTOS, including resource management and the different platforms. You also need general knowledge of operating systems and how they impact embedded software development, as most devices have limited memory and therefore need very efficient operating systems to function.

Electrical Engineering Experience

In order to properly understand what is required of the embedded software they develop, another of the key embedded software engineer skills required is experience in electrical engineering. When you’re working on a development project you’ll need to be familiar with the capabilities and features of the specific device, and you’ll find this much easier when you’re also familiar with how the device has been made.

Embedded software is reliant on the device that it controls, so you need to understand how things like components, resistors, circuits and signals work to ensure that your software will be compatible with the design. It will also benefit you to be familiar with electronic circuit schematics and PCB layouts, which is easiest if you’ve had experience drawing and assembling these yourself.

Testing And Debugging

A big part of any software development role is testing and debugging, and you’ll need good skills in both of these disciplines to succeed in embedded software engineering.

Embedded software needs to be tested throughout the development process to identify potential issues and ensure that the finished program is reliable and efficient. As part of this, you may need to write unit, integration and system tests or know how to use automated testing tools, selecting the best processes to confirm the safety and functionality of your code.

Debugging is often the result of testing, requiring a range of techniques that can vary depending on the programming language you use. Knowledge of classic debugging approaches is necessary here, as well as more general problem-solving skills to help you work through problems you encounter.

Hardware Experience

In line with having general electronic engineering skills, a successful embedded software engineer needs to have experience working with hardware. You’ll need to know how to use hardware test equipment like an oscilloscope and logic analyzer, as well as be confident in interpreting data sheets or reading schematics.

Signal Processing

As an embedded software engineer, you’ll need to know how signal processing works so that you can ensure the device you’re helping develop can communicate with others. Whether digital or analogue signals are involved, you’ll need to make sure that your software handles the information from input signals correctly and generates appropriate signals in response. You must have strong mathematics skills to understand signal processing, as well as an understanding of dynamic systems and control tasks.

Communication Protocols

Embedded systems exchange information using communication protocols, and as a software developer you’ll need to understand these to ensure that your device can work together with others. In embedded systems engineering, several different interfaces are used for communication, each of which has its own protocol.

Communication protocol skills involve being able to use the right protocols for the device and software that you’re developing. Some of the most frequently used in embedded systems software include USB, Zigbee, GPIOs, Bluetooth, CAN bus, Wi-Fi and EtherCAT.

Control Systems

Some embedded systems are also control systems, combining two engineering disciplines in a single design. This isn’t one of the most essential skills needed for embedded software engineers, but understanding control systems engineering principles can help elevate your design knowledge and lead to greater career opportunities.

Software Development Methodologies

Software development projects usually follow an established process based on a methodology that provides structure and direction for everyone involved. As an embedded software engineer, being familiar with these methodologies will ensure that you’re aligned with your colleagues whilst working on a project and understand what is required of you at each stage of development.

Agile methodologies, usually Scrum, are most common in the software development industry. You’ll need to be familiar with the fundamentals, principles and key roles involved in this methodology, along with the development and testing procedures required.

Cybersecurity

Whilst embedded software itself is quite secure and reliable because it is specific to the device that it runs on, embedded systems that use networks can be vulnerable to issues of cybersecurity. Some of the important skills needed for software engineering are secure coding, authentication mechanisms and cryptography, all of which will help to keep your embedded software as secure as possible.

Machine Learning

Finally, an embedded software developer skill that is becoming more valuable as time goes on is experience with machine learning and artificial intelligence. Embedded systems can be used with machine learning to gather data and then learn from this information to make predictions, using data more effectively and ultimately saving time and providing more valuable insight. As a software developer, you may be required to help develop programs which incorporate machine learning to achieve these outcomes.

Soft Skills Needed for Software Engineering

There are plenty of technical essential embedded software skills, but that’s not all that is required for the role. The soft skills needed for software engineering play just as important a part, and are something that interviewers will be looking for evidence of when you’re applying for new roles.

Here are some of the key soft skills required for embedded software engineers.

Teamwork

Whilst embedded software developers will spend a lot of their time working independently, this work will be done as part of a team development project. Teamwork is an essential soft skill, requiring the ability to collaborate and support others as well as emotional intelligence to judge situations and adjust your behaviour accordingly.

Time Management

As an embedded software developer, you’ll be tasked with completing your assigned sections of a project and aligning this work with deadlines and other members of your team. Good time management skills are crucial, as delays in your progress could hold up an entire project, so you’ll need to be good at sticking to deadlines, holding yourself accountable and motivating yourself whilst working alone.

Continuous Development

One of the most desirable skills in an embedded software developer is a commitment to continuous development. Whether you pursue this in your free time or make the most of the training and resources that are provided to you at work, making the effort to keep learning about new techniques and developments in your industry gives you a competitive advantage over other developers.

Communication

In line with teamwork, communication is another essential soft skill for embedded software developers that ensures you can work cohesively on a project with your colleagues. Not only do you need good interpersonal skills, but you’ll also need strong written communication skills so that you can record the progress of your software and the procedures you’ve followed, making it easy for someone else to understand what you’ve been doing.

Problem-Solving

We’ve already talked about the need for testing and debugging skills as a software developer, and problem-solving plays a big part in that. Not only do you need a resilient attitude, but also the ability to look at problems from different perspectives and think of creative ways to overcome challenges, based on your knowledge of classic software development and debugging techniques.

Summary

When you’re applying for an embedded software developer role, the interviewer will be looking for evidence and examples of all of the skills we have discussed in this article. Different roles will have more need for certain skills, but if you’re looking for a way to improve your success in job interviews, proficiency in all of the embedded software skills we’ve discussed will be very beneficial.

If you’re an embedded software developer looking for your next role, KO2 is a specialist recruitment agency that can help you find the perfect job opportunity. Take a look at our current embedded software development positions, or get in touch to discuss exactly what it is you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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Matter Standard: A Guide for Engineers

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Coding Standards Best Practices and How to Uphold Them

Chris Oddy — Thu, 29 Feb 2024 11:08:52 +0000

Coding Standards Best Practices and How to Uphold Them

In the embedded software sector, a unique feature of code is that it’s designed to perform a specific function and is written for particular devices. This unique and dedicated functionality means that embedded systems are often used in medical and safety-critical contexts, which means that errors and security issues need to be as minimal as possible.

Upholding good programming practices is one of the best ways to ensure that embedded software, and any kind of software, is as efficient, reliable and error-free as possible. In this article, we explain the benefits of following coding standards best practices and highlight the main ones that all embedded software engineers should know.

What are Coding Standards Best Practices?

Coding standards are a set of rules that are set out for developers and programmers to follow when they’re writing code. They provide a framework of instructions that should be followed no matter the kind of software being developed, outlining basic practices to ensure good quality code across all industries.

Without official coding best practices, the ways that people write code would differ a lot, which could lead to a range of problems. Having a set of good programming practices sets out basic things that all programmers need to do when writing code, creating consistency and helping to uphold high standards.

Why Are Coding Best Practices Important?

As we’ve just touched upon, standardised coding conventions help to prevent a range of issues with software and applications, as well as make it easier for developers to write code that can be worked on by other people. Here are some more of the main reasons why software development best practices are important.

Improved Code Quality

One of the main reasons for good coding practices is that it massively helps to improve code quality. When there’s a set of guidelines outlining clear ways to make code better, all of the code that follows these guidelines will be of the same high standard. Following these principles of coding also reduces the number of simple errors that are made, which again improves the overall quality of code being written everywhere.

Reduced Costs

Following a set of coding principles helps to reduce the number of errors and bugs that are present in a piece of software. This in turn can help to reduce production and maintenance costs because less time is spent having to run tests and fix issues, as well as improving code readability which decreases the time it takes to spot errors. When code is written to a high standard, it’s also easier to reuse, which again can save time and reduce overall production costs.

Ensured Compliance

Code standards are created to ensure that programmers are compliant with regulations relating to safety and quality. Certain programming languages will have specific coding practices that link to compliance in the industry sector that the software is for, so following the guidelines is important as a way to ensure that developers don’t face issues like fines or sanctions in the future if their code isn’t compliant.

Easier Collaboration

When every software developer is working with the same coding standards best practices, the code that they’re all producing will be similar. This makes collaboration easier, as everyone should be following the style and formatting rules, documenting their process in the same way, and making their code readable. Therefore, any developer should be able to look at another person’s code and not only understand it but also be able to continue working on it.

Secure Code

A key feature of good programming practices is taking steps to ensure that code is as secure as possible. By using approaches that limit the likelihood of errors, and also implementing procedures that can easily highlight potential security issues, code is safer and adheres to recommended practices that ensure higher levels of security overall.

Efficient Development

Finally, following the best practices in software development helps to make the whole development process more efficient, which is not only better from a cost perspective but also from a productivity point of view. By using methods and approaches that minimise errors, streamline testing and debugging, and ensure high-quality software, projects progress much more efficiently without as many unexpected challenges or scenarios.

9 Key Coding Best Practices

Whilst there are many common themes among coding standards best practices, there’s no universal set of principles that apply to every kind of project and programming language. Instead, coding best practices are often tailored to an industry, type of software or even a company, with subtle differences that link to the purpose of the code in question.

However, the majority of coding standards have many of the same principles, which we’ll explain below.

Naming Conventions

Naming conventions are an important part of ensuring that code is readable. Local and global variables, contents, classes and functions should all be given meaningful and descriptive names that make it easy to understand their purpose and avoid confusion when it comes to refining and checking the code.

Depending on the programming language you’re using, CamelCase or snake_case should be used. Names should be kept concise and consistent throughout all of the code, using the same themes.

Code Readability

Another good software engineering practice is to ensure readability throughout your code. This not only means that the code is easy to understand, but also that it optimises space by being concise. You can make your code as neat and readable as possible by using the naming conventions we’ve discussed above, keeping functions short and avoiding long lines of code, trying to avoid too many levels of nesting, and segmenting code blocks in the same section into paragraphs.

Code Comments and Documentation

Comments on code act as explanations and context for functions and statements. These comments should explain the algorithm and the logic applied and make it clear to any other developer what’s happening in the code and the ideas that went into it. Documentation is another way of ensuring that your code is easy to understand and that there are clear explanations about the process you followed as you were developing it.

Standardise Headers for Different Modules

In the same line as naming conventions, standardising headers is another really important part of good programming practices. The code you’re writing will be much easier to understand and also to maintain if each module has headers that follow the same standard format.

The header format that you choose should include the following:

The project that the program belongs to
The name of the module
The author of the module
A summary of the module’s purpose
Any functions that are supported in the module
Any variables that are accessed in the module
The history of revisions made to the code

Uphold Industry Coding Standards

As we’ve already briefly touched upon, there are different requirements for code in different industries when it comes to things like safety and quality standards. Therefore, it’s important to check the specific coding standards that apply to the type of software that you’re developing to ensure that the finished product will be compliant with relevant regulations and meet user and business requirements. An example of this is MISRA C, which is a set of guidelines for coding software for electronic devices in the automotive industry.

Code Reusability

Being able to reuse code is a major benefit in software development. Not only is it a massive help in saving time, but it can also help to improve the overall standard of a program by replicating high-quality code throughout, instead of having various qualities of code performing the same function.

You can reuse code to perform the same function in a piece of software, or you can adapt it slightly to perform a similar function. To ensure that this can be done successfully, you first need to check that the code is versatile, compatible with different hardware, and (obviously) free of errors. Once code has been approved for its suitability, it can be added to a utility module or shared library.

Indentation

Indentation is a key aspect of formatting that is used to improve the readability of code. It’s one of the most important software engineering best practices because it helps to ensure that code is organised and easy to read, as well as contributing to the overall aesthetic.

There’s no standardised way to indent code; some programmers use two spaces and others prefer four. Consistency throughout the code is the most important thing, as with any formatting practice. Other good practices include indenting at the beginning and end of each program block, nested blocks need to be spaced and indented, and new lines should be used when a brace starts.

Testing

Testing ensures that software is functional and secure, so is an important part of the best coding practices. To do this properly, unit and integration test cases should be selected and prepared before you actually start writing the new code, so that it’s ready for testing as soon as it’s needed. You should also use automated testing to continuously validate your code and ensure its functionality, which can be done with a range of different tools.

Error Handling

Error handling is an essential part of software development, and therefore the proper implementation of this is one of the coding standards best practices. Designing appropriate error messages that communicate issues and highlight failures will help to identify problems early and provide direction for fixing them. Over time, an efficient error-handling approach will help to reduce the number of errors in your code.

Summary

The majority of software development best practices are relatively easy to uphold once you know them, as they revolve around formatting standards which will become second nature once you’ve been using them in your code development for a while. In the embedded systems sector, these practices are especially important to ensure that your code is serving its intended purpose and minimising the likelihood of errors, which are key features of embedded software.

If you’re an embedded software developer looking for your next job opportunity, KO2 is a specialist recruitment agency that can help you find your perfect role. Take a look at our current job openings or get in touch to speak to the team directly about what you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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What is the Best Language for Embedded Systems?

Chris Oddy — Wed, 31 Jan 2024 13:12:51 +0000

What is the Best Language for Embedded Systems?

If you asked a group of software developers which language is used for embedded systems, the majority of them might say C or C++. But you’d also get answers ranging from the popular Java programming language to the specialised Ada, as well as specific embedded languages like MicroPython.

There’s no single answer to what programming language is used for embedded systems because a range of different languages are suitable for designing and developing embedded software. If you’re a software engineer working with embedded systems you might have a favourite option, or you might be curious about other compatible programming languages and the types of projects they’re best suited for.

In this article, we discuss eight of the most popular embedded systems programming languages and share their key features, uses and how to choose between them.

What is Embedded Software?

Embedded software is any type of software that is built into a specific device. It has fixed hardware requirements, which means that it cannot be installed on different computer systems and instead is designed for a particular type of device.

The hardware components that run embedded software on a device are known as the embedded system. Embedded software is developed to run on the specific hardware in a device, which means that it is created from scratch to suit the unique device every time.

The specialised nature of embedded software means that developers need to have a comprehensive understanding of programming and device hardware. Whilst popular coding languages can be used for embedded programming, the approach needed for this kind of software is niche, which makes embedded software engineers an in-demand role.

What Is the Best Programming Language for Embedded Systems?

There are a range of different options when it comes to deciding which programming language is best for embedded systems. Some options are popular coding languages compatible with embedded devices, whilst others have been specifically designed to suit embedded software engineering and are more niche in the industry.

When you’re choosing the best language for programming embedded systems, you should consider factors such as:

Whether the tasks the software is completing are low-level or high-level
The memory of the embedded device and the size of the program it will be able to run
Any hardware constraints that might make a particular language unsuitable
Whether the program needs to be portable and suitable for other processors
The level of security the code needs to have
Your familiarity with other coding languages and the learning curve required to get to grips with something new.

Here are eight of the most popular programming languages for embedded systems and some of the key features of each.

C++

One of the most popular programming languages for embedded systems is C++, which was designed as an extension of the C programming language in the 1980s. It’s an object-oriented coding language with a lot of different capabilities that build on its predecessor, including inheritance and polymorphism which help to improve the development process by allowing you to reuse code.

A feature that makes C++ so good for embedded software development is that it’s a low-level programming language, allowing control over elements of hardware resources. Another benefit is that it’s also mainly compatible with code written in C, allowing for existing software to be reused and adapted without starting from scratch.

C++ is known for being a flexible language which makes it suitable for a range of different embedded software projects. It’s often chosen for IoT projects and applications that can be used on a range of different devices, thanks to its portability.

Python

One of the most common programming languages used by developers across engineering sectors is Python. Developed in the 1990s and known for being an accessible programming language for all abilities, its simple syntax makes developing code very straightforward which is ideal for quick implementation.

Python isn’t a standard choice for embedded systems programming, but it’s become more popular in recent years because of its advantages for rapid prototyping and scripting tasks. The development of MicroPython, an implementation of the language designed especially for embedded programming, has contributed to this, taking all the key features of Python and making it tailored to embedded software development.

It’s best to use Python if you’re working on rapid embedded software development, but bear in mind that other languages offer fast run times and memory management when it comes to actually running an application on a device. If you’re using MicroPython for programming, it’s designed for hardware tasks and is only compatible with certain hardware, which helps to narrow down the kinds of tasks this embedded systems programming language is best for.

C

C is another classic programming language that was originally developed in the 1970s. A compiled programming language with relatively simple syntax, it allows for direct hardware access and control which is ideal for developing firmware.

Embedded software developers have been using C for programming for a long time, which means that there’s a great bank of resources and instructional guides out there for other developers to follow. The portability of the language also means that programs can run on different operating systems and devices, making it a really versatile choice to learn and use.

Common embedded software projects that developers use C for include consumer electronics, automotive systems and industrial control systems. It can be harder to get to grips with if you’re unfamiliar with low-level programming or more technical coding techniques, but is a very efficient embedded systems programming language.

Assembly

Assembly languages are low-level programming languages that are specific to the hardware they are being written for. Programs and applications communicate directly with the device hardware when they’re written in assembly language, making it incredibly fast and memory efficient.

When you code in assembly language you get the option to utilise hardware-specific features, but your software won’t be portable and can be harder to read and maintain. It’s really useful if you’re dealing with hardware resources like firmware or bootloaders, as you get much more control over these to help deliver the desired functionality.

There aren’t a huge amount of projects where assembly language would be the superior choice over popular embedded systems coding languages like C++ and Rust. But if you’re writing code for a specific hardware platform and the code needs to be high-performing and highly optimised, assembly is the best option and is still worth knowing as an embedded software engineer.

Java

Java is a popular high-level programming language that is most often used for coding web applications. Developed in 1995, it’s multi-platform, object-oriented and very secure, and is used by plenty of developers because it is straightforward to code in.

A lot of well-known programs and applications are built on Java, but it is also starting to be used for more complex embedded systems programming, especially since it’s a very portable language and is great for networking. If you’re trying to develop and deploy software that will be run on multiple devices, Java can adapt to the majority of architecture without issue.

Ada

Ada is a programming language initially developed in the 1980s and then revised in the 1990s, when it became the first internationally standardised (ISO) object-oriented language. Named after the famous programmer and mathematician Augusta Ada Lovelace, it was designed for embedded systems and long-lived applications where code needs to be reliable and efficient as well as secure.

There are strict design rules for Ada programming which means the code is always reliable and quite easy to maintain. However, it’s not as popular a language as many of the others on the list and can be difficult to learn, which is challenging if you’re seeking support or looking to develop a program quickly as a beginner.

If you’re developing software for safety-critical embedded systems then Ada is an ideal choice because of its security features.

Rust

Rust is a relatively new language used for programming embedded systems, developed in 2010 by the software company Mozilla. It’s a high-level coding language that was created to allow for safer and better-performing code without compromising on low-level control, which makes it a popular choice for embedded devices.

Applications for embedded systems need to be reliable and resilient, which Rust provides by encouraging more secure code. It’s quite a similar language to C and C++ in terms of its features and the projects it’s most suited for, but offers better code safety and performance, although it can integrate with code written in C and help to improve this.

The newness of Rust means that there’s plenty of interest in it as the potential best language for embedded systems, but its young age also means that there are not the same kinds of resources or knowledge banks for developers to rely on when they’re coding. It’s a superior choice for embedded software that needs to be secure and robust, once you’ve got to grips with the syntax.

Embedded C

In the same way that MicroPython is a specific extension of Python, Embedded C is an extension of the C programming language designed specifically for microcontrollers. It shares the same syntax and semantics with extra features that make it ideal for developing embedded software.

Embedded C doesn’t use as many resources as C and has optimised memory, which means the code executes much faster and is better for small devices. Low-level programming and direct hardware interaction give developers a lot of control over the device hardware, making it easy to create programs which lead to ideal device operation.

If you’re already familiar with C as a programming language then embedded C is a great choice for an embedded systems project, as you won’t have to get your head around too many different features or an entirely new syntax. You should also be careful when using embedded C if a device needs to be secure, as the manual memory management means that errors are sometimes harder to spot.

Summary

Other programming languages are suitable for embedded software development, but the selection listed above covers the most popular choices which are particularly good for different types of embedded systems. When it comes to making a decision, consider your familiarity with certain programming languages and then consider the requirements of the embedded software development project. This should help you choose a language that won’t be too complicated to use and which will also allow for maximum efficiency.

If you’re an embedded software developer looking for your next role, KO2 is a specialist recruitment agency that can help land you your perfect job. Take a look at our current embedded software engineer opportunities, or get in touch to speak to our team about what you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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MicroPython vs Python – What’s the Difference?

Chris Oddy — Wed, 31 Jan 2024 12:57:52 +0000

MicroPython vs Python – What’s the Difference?

Writing software for electronic embedded systems presents a specific set of challenges that general software development does not. Memory is limited because of the size and operating speeds of the devices, and limited battery life can impact how the code performs.

Using a programming language that is specifically designed for embedded systems is a great way to navigate these challenges, and MicroPython is a brilliant option in this instance. A refined implementation of the Python programming language designed specifically for micro compressors, MicroPython is ideal for programming embedded devices and systems and is particularly useful for those less familiar with other programming languages like C++.

In this article, we compare MicroPython vs Python, discuss what makes Python unique and what sets MicroPython apart from other programming languages, and advise on the best scenarios to use each of them in.

What is Python?

Python is one of the most commonly used programming languages by software developers. It began its life as the holiday project of Dutch programmer Guido van Rossum, but was then developed and launched in 1991 as a better version of the ABC programming language with improved readability and developer productivity.

Developers generally use Python as a language for scripting and automation tasks. It is also often used by engineers who want to rapidly develop applications, thanks to its dynamic typing and dynamic binding features.

Other key features of Python include that it is a high-level, object-oriented programming language which is interactive, has dynamic semantics and works across different platforms. The syntax is considered to be quite easy to read, so Python is often one of the first programming languages that engineers and developers learn, as it’s easier to debug and maintain.

The versatility and accessibility of Python make it one of the most popular programming languages for a wide range of tasks across all industries.

Advantages of Python

Python was designed to be easy to learn and understand, which means that it’s a great programming language for developers at any level of experience
Python is a portable programming language, so it can be run on a range of different platforms and programs
Productivity is maximised whilst you’re coding in Python thanks to the language’s design, making it ideal for quick tasks
Python has a huge standard library, so it’s easy to find a wide range of coding functions without having to install an external library
Code written in Python is executed line by line, so if an error is found the code stops running immediately and the error is found, which can save a lot of time
Python is dynamically typed, meaning that you don’t need to worry about declaring variables or data types as these are automatically assigned during execution

Disadvantages of Python

Python uses a lot of memory to store code, which can affect its efficiency
Runtime errors in Python or quite common so programs need to be thoroughly tested before they run properly
The line-by-line execution of Python code means that it’s not the fastest programming language
Some developers feel that Python’s database is underdeveloped in comparison to other languages
Python is not the most efficient language for applications running on mobile and browsers because of its slow run time
Data types of variables can change at any time in Python code, which means it requires more testing to remove unintentional errors

What is MicroPython?

MicroPython is an implementation of the Python programming language. It was developed in 2013 by Damien George and originally launched on Kickstarter to create a language for microcontrollers and small embedded systems that had the same simplicity and accessibility as Python.

The name ‘MicroPython’ comes from the fact that this subset of the programming language is designed to be used with microcontrollers. It includes a Python compiler, a runtime interpreter of the bytecode that this compiler produces, and a subset of the Python standard library.

Many people think of MicroPython as a more compact version of Python that makes hardware planning quicker and more straightforward. It’s often used in conjunction with a Pyboard which allows the language to run on the bare metal.

Advantages of MicroPython

Perhaps the main advantage of MicroPython is that it has been optimised for processing constrained hardware so it works really well with microcontrollers
MicroPython is an easy-to-read programming language, making it easier and faster to work with than other languages used for microcontrollers
There’s good documentation for a number of different boards that you can use MicroPython with
Since MicroPython is open-source, it has a very helpful community behind it that can be useful if you’re looking for help and support during projects
Error handling in MicroPython is similar to Python, so the program will stop running if an error is identified

Disadvantages of MicroPython

MicroPython isn’t as fast as other low-level programming languages that are used for microcontrollers, so performance doesn’t compare in the same way
Similar to Python, the programming language also isn’t as memory-efficient
The entire Python standard library cannot implement MicroPython
MicroPython isn’t very portable between devices
Debugging can be lengthy and time-consuming, so it’s not an ideal language for time-sensitive projects

The Difference Between MicroPython and Python

There aren’t a great deal of differences when it comes to MicroPython vs Python, as the former is a more compact version of the latter designed for a specific purpose. However, when it comes to properly understanding the purpose and uses of each programming language, being able to describe their differences is important.

The key difference between Python and MicroPython comes from the fact that they are designed for different purposes. Python is used to write code that runs on powerful processors, whilst MicroPython was designed to be compatible and power microcontrollers and microprocessors.

One of the biggest differences between Micro Python and Python is how the two programming languages manage memory. One of Python’s main advantages over other languages is that it uses a garbage collector for memory management, but MicroPython requires the user to manually manage memory and allocate it themselves.

Another difference is that MicroPython can integrate with circuits, sensors, buttons, displays and other aspects of electronics seamlessly; this is one of the main things it was designed to do. Python on the other hand cannot, as it’s not a compatible programming language.

The syntax of Python and MicroPython is quite similar, but differs because of the limited features that MicroPython has due to its compact size. Python’s syntax uses whitespace to indicate blocks of code, whereas forgetting to use a space to form an acceptable expression in MicroPython would cause syntax errors.

One feature of MicroPython that is unique is that you can write code, ‘freeze’ this as a module and then reuse it as a library. Unlike with Python, you can use this to avoid having to repeatedly download the same error-free code.

Speaking of libraries, a significant factor in the MicroPython vs Python debate is that Python has a lot more core libraries available. You use MicroPython to do a smaller range of programming tasks, but you also have more limited access to a subset range of standard libraries.

On the flip side of this point however, MicroPython doesn’t require as many resources as Python to run. It also doesn’t rely on an operating system, as the language itself provides this.

When Should You Use MicroPython and Python?

If you’re a software developer or engineer with experience in both Python and MicroPython, the good news is that it’s quite straightforward to choose between using one of the two programming languages. As with many choices like these, it comes down to the kind of project that you’re working on.

If you’re writing code for a microcontroller, in a constrained environment or an embedded system, MicroPython is an ideal programming language to use. It’s been specifically designed to provide an optimal experience for developers working on firmware or software for embedded development boards, and is particularly useful if you want to develop something quickly.

MicroPython is a particularly good choice for this kind of software development because the syntax of Python is so accessible. C and C++ are other popular languages for embedded software development but are much harder to learn, whereas MicroPython provides a much more beginner-friendly alternative.

If you’re working on a different type of coding project however, Python is the best choice as it is much more versatile. From building applications to web or game development, there are a lot of different projects you can work on. So unless you’re writing code for a microcontroller, Python is the better choice of the two.

Python is also a great choice over other programming languages like C or C++ because of its usability and easy syntax. If you’re new to coding, or you’re trying to develop a project quickly, Python is a great language to use to work efficiently without too many obstacles to overcome.

Summary

MicroPython is a really easy-to-use programming language that is ideal if you’re trying to write embedded systems software. If you’re already familiar with Python then getting to grips with MicroPython isn’t too much of a learning curve, and as an embedded software developer there are plenty of benefits to being proficient in this coding language.

If you’re an embedded software engineer looking for a new job opportunity, KO2 is a specialist recruitment agency that can help land you your ideal role. Take a look at our available jobs or get in touch with our team to tell us what you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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C++ vs Python

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Hiring IT Skills in the Electronics Industry – What You Need to Know

Chris Oddy — Tue, 02 Jan 2024 18:07:21 +0000

Hiring IT Skills in the Electronics Industry

What You Need to Know

The electronic embedded systems sector of the engineering industry is a space that is seeing plenty of innovative development at the moment. A key element of this is the increase in cloud technology, which has meant more and more devices are storing and transmitting information to cloud-based systems, and therefore need to be compatible with the software required.

The lines between hardware and software are becoming more blurred as technology advances and electronic devices and components become more integrated with cloud systems. IT skills are required alongside electronic engineering knowledge in order to continue developing new and impactful products in our sector, which means that embedded electronics companies are in need of candidates with a new set of skills.

In this article, we discuss why electronics employers should hire candidates with an IT background, what to know before you hire, and the best ways to recruit IT candidates in the electronics industry.

The Need for IT Skills in Electronics Businesses

Over the last decade or so, cloud technology for data and system storage has been widely used across many industries. Electronic devices and components need to be compatible with the cloud, which means the majority of companies designing and manufacturing these products are looking for candidates with IT skills and experience for the first time.

Software and DevOps engineers are incredibly valuable employees for electronic embedded systems businesses to have in their teams at the moment, as more and more cloud technology emerges and integrates with all kinds of devices. Knowledge and experience with various cloud services, networking, cloud DevOps and cloud security are essential, meaning that many companies in the electronics sector are looking to hire new IT skills to expand their team’s abilities and keep their product relevant and compatible.

What to Know Before You Hire

One issue that we have seen our clients come up against when it comes to hiring new IT skills is that recruiting software and DevOps engineers is different to finding electronics engineers. If you’re adding these roles to your team for the first time, understanding what specific skills or experience to look out for and knowing what questions to ask in a job interview can be challenging.

Working with a specialist recruiter in your industry sector, like KO2, is a great idea if you’re looking to hire candidates with IT skills for the first time. Our industry experience means that we understand what is required of IT candidates stepping into a role with an electronics employer and can help you through the recruitment process to find a candidate who will be the right fit.

Something else to consider before you hire a candidate with IT skills is that salary expectations can be different to what typical engineering candidates would expect when applying for a role at an electronics company. Make sure to be aware of what your target candidates are being offered for other roles, and if you cannot match this then work on your employment offering and benefits to ensure you’re still a competitive employer.

While there are candidates with an electronics background and relevant IT skills on the market, they’re few and far between. So when it comes to sourcing the right kind of candidate for your business, the recruitment process may take longer and may require a lengthy onboarding process to get a new employee up to speed on what they need to know.

What typically happens in these recruitment scenarios is that candidates and employers meet in the middle when it comes to requirements from both sides. Employers will find a candidate with an interest and/or experience in both IT and electronics engineering and settle on an offer that works for the candidate. This flexible approach is the key to success when it comes to hiring IT skills in the electronics industry, as with limited potential candidates, companies need to be clear on what they need and what they can adapt to.

How to Recruit IT Candidates

If hiring candidates with IT skills is a new step for your electronics company then you should be aware that it will require a different recruitment approach. In this section, we’ll take you through the essential things you need to know when hiring for a software or DevOps role.

Where to Find IT Candidates

When you’re looking for engineering candidates with a niche skill set, traditional sourcing methods might not always yield the candidate pool you were hoping for. A well-crafted job ad shared on relevant engineering websites is a good start, but there are other places to look when it comes to sourcing IT candidates.

Social recruiting is becoming more and more common across a lot of industries, and when you’re looking for a candidate who specialises in something like IT for electronic devices, turning to social media platforms like LinkedIn can be a good way to find what you’re looking for. Sites like Twitter can also be useful when you’re searching for potential candidates talking about electronic IT work.

Alternatively, joining online communities where members talk about or share work relating to what your company does can also be a good place to find skilled IT candidates. Sourcing software developers on sites like GitHub has been common in the engineering industry for a while now, and you can copy this approach to finding candidates with the right IT skills on places like StackOverflow

Potential candidates that you find online should be approached with the intention of making a connection, instead of immediately pushing an offer for an interview. These people might not be actively looking or even considering a job change, so the best thing you can do is present a positive impression of your company and work towards getting them on board.

Along with active sourcing strategies, consider inbound recruitment methods as well which target IT candidates who might have an interest in working for your electronics company. Inbound recruitment involves creating a positive impression of your company as a place of work so that candidates are attracted to you and the work you do, helping you build a following of potential candidates who will be more likely to apply for roles when they open up.

If you’re looking for future employees who are interested in your area of work, make sure that you’re advertising the projects you do (where possible) and the opportunities that these offer employees. Your employer brand should be geared towards highlighting the experience that IT candidates could have as part of your business, which should lead to a reputation developing that attracts these target potential candidates who want to work for you.

How to Interview IT Candidates

Once you’ve established your strategy for sourcing IT candidates, you’ll need to develop an interview process which ensures the right kind of candidates get offered the role. As discussed above, this can be difficult if you lack experience hiring candidates from an IT background, as you may struggle to know what kinds of questions to ask or technical assessments to conduct.

As with any engineering interview, the first thing to clarify is what is required of the role. Decide on the skills and experience that are necessary for the ideal candidate, and be clear on which desirable traits or skills you can be flexible on. As we previously said, adaptability is key to hiring talented candidates who will be the right choice for your business in the long term.

The technical skills you’re hiring for may not currently exist within your team, which can make gauging a candidate’s suitability difficult as you won’t have someone who can determine their proficiency based on personal experience. This is another case where working with a specialist recruiter can be useful in designing the right kind of technical assessment for an IT candidate, although doing industry research yourself about a competitor’s interview processes can also be helpful.

Working for an electronics company as an IT professional presents plenty of new challenges, but some candidates may not be as familiar with the potential for innovation and experimentation that these kinds of roles offer. When you’re interviewing applicants, it’s important to acknowledge how this role will differ from typical IT jobs by highlighting the benefits and exciting projects on offer, which will attract and engage the kinds of candidates who will bring valuable skills and perspective to your business.

Summary

The key takeaway from this article should be that adaptability is the key to successfully recruiting software and DevOps engineers with the right IT skills for your business. Finding a candidate with an interest in both IT and electronics engineering should be the priority, and if you’re new to hiring these kinds of skills, working with a recruitment agency is a great choice to help find skilled IT candidates.

KO2 is a specialist recruitment partner in the electronic embedded systems sector that specialises in helping electronics businesses recruit IT professionals. Take a look at our client services or get in touch to speak directly to the team about what you’re looking for.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

Moving From Contract to Permanent Engineering Roles – A Guide

Matter Standard: A Guide for Engineers

What is the Difference Between C and Embedded C Programming?

What are the Key Characteristics of an Embedded System?

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Lead Data Engineer Questions and Answers for Job Interview

Chris Oddy — Thu, 02 Nov 2023 09:24:42 +0000

Lead Data Engineer Questions and Answers for Job Interview

What you Need to Know

As more and more devices and systems are designed that collect and interpret data, a greater number of engineers are required to process, store and transform this data so that businesses and consumers can get the most value from it. A lead data engineer is one role that helps to do this, taking a senior role in data management projects and helping companies find innovative ways to organise and use their data.

If you’re looking for a new opportunity in this industry or want to advance your career by applying for lead data engineer jobs, preparing for a job interview is one of the key ways that you can improve your chances of success. In this article, we explain what is required in a lead data engineer role and talk through common data engineer interview questions and answers to help you understand what the application process might involve.

What is a Lead Data Engineer?

A data engineer is a type of engineer responsible for preparing raw data for a range of different uses. This involves collecting, sorting and analysing data, as well as creating infrastructure that stores, manages and converts data either for their use or for data scientists and analysts to use.

Data engineering requires software development skills as well as specific knowledge of information systems and data management. A lead data engineer will be required to find solutions to managing large amounts of raw data for different purposes.

The role of lead data engineer usually involves taking the lead role on a project or in a team, often requiring senior experience in data engineering. Within this role, you’ll be required to do all of the usual responsibilities of a data engineer, along with leadership responsibilities.

What Does a Lead Data Engineer Do?

Lead data engineer jobs require a range of different skills, and the purpose of the data management and analysis will differ depending on the company and sector. The following list is an example of the different responsibilities that might make up a data engineer’s day-to-day role.

Analysing and organising raw data
Designing, building and maintaining digital architecture for data
Facilitating and overseeing data operations such as data extraction, transformation and storage
Developing data pipelines
Creating data modelling processes
Compiling and organising data from multiple sources
Maintaining digital architecture
Testing and refining frameworks and databases
Running and reporting on data analysis
Interpreting data, identifying trends and sharing insights
Designing and delivering updates to ensure continued efficiency

Lead Data Engineer Interview Questions

When you’re interviewing for lead data engineer jobs, you’re likely to be asked a range of technical questions and broader questions about your leadership and management skills and experience. Below are some of the most common lead data engineer interview questions to help you get an idea of what to prepare for.

Why did you choose a career in Data Engineering?

One of the classic questions for data engineer interviews asks the candidate about why they’ve chosen this particular sector. In your answer, you should talk about your background, what interested you in data engineering in the first place, and also any particular areas that you’re passionate about. It can also be useful to highlight whether there’s any work in this sector that you’d really like to do, or any aspirations that are motivated by something personal.

What data tools or frameworks do you have experience with?

This question is usually asked in interviews as a way to gauge your previous experience and identify whether you’ll be able to hit the ground running in your new role. You should talk about the tools that you have the most experience using for data engineering tasks and also whether you have any preferences. If you can talk about particular projects you’ve used the tools for, that can help to improve your answer.

How much experience do you have with data modelling?

Data modelling is a key part of many data engineering roles, and as a lead engineer in particular, most employers will be looking for candidates with experience in this area. One of the best ways to answer this question is to give specific examples of past projects where you have used data modelling, to illustrate your point.

Can you tell us a bit more about the data engineer certifications you have earned?

Since a lead data engineer is quite a senior role, candidates who have particular certifications in this area will likely do better in interviews if they can highlight that they have these qualifications and what the benefits of this are. If you have data engineer certifications, talk about why you chose them specifically and what they have led you to be able to do, to highlight their and your value.

Which non-technical skills have you found most valuable in your role as a data engineer?

Alongside data engineer technical interview questions, when you’re interviewing for a lead role you will also be assessed on your non-technical, soft skills. This question is asking you to highlight these skills, but also to share why you think they benefit you in a data engineering role in particular.

It’s a good idea to list 2-4 skills and provide an example of when this skill has benefited you in your role. Having experiences to draw on helps to enforce your points and provides a much more persuasive answer than just listing skills without any evidence.

What do you think is the hardest aspect of being a data engineer?

In a data engineer interview, there are often broad questions like this one that explore your experience of the data engineer role. When you’re interviewing for a lead position, the interviewer will want to know that you have a full understanding of what the role requires, which is what questions like this are used to determine.

In your answer, you can talk about a general challenge or something that you personally have struggled with. For the latter, remember to also focus on how you’ve overcome or are overcoming this challenge to demonstrate self-awareness and resilience.

Can you explain the difference between structured data and unstructured data?

Alongside data engineer scenario-based interview questions, you’ll likely also be asked technical questions like this one to check your practical and theoretical understanding of data engineering. The answer to this one is that structured data is stored in a particular format and often very specific, whilst unstructured data may include a range of different types of data that are stored in different formats.

Can you list and explain the design schemas involved in data modelling?

There are six main types of design schemas that can be used in data modelling: the flat model, hierarchical model, network model, relational model, star schema, and snowflake schema. In the answer to this data engineer interview question, you should list each of these and give an example of the type of data modelling project that you would use each of them for.

What are the pros and cons of working in a cloud computing environment?

Plenty of data engineers store their data in the cloud, and if you’re applying to work at a company that does this, you’ll likely be asked a question about this kind of environment. If you can give an example of previous experience as part of your answer, that’s great, but just knowing the pros and cons is still important.

Some of the advantages of working in a cloud computing environment are that you’re not required to secure physical hardware, scaling applications is quick, you can deploy applications globally, and you’re not limited to where you own data centre space, which improves the consumer experience. Disadvantages include the potential for vendor mismatches, complex costing systems, control issues and a reliance on fast and secure internet connection.

How can data analytics help the business grow and boost revenue?

This interview question for a data engineer is based on your knowledge of the value of data analytics, which is something that a lead data engineer will be expected to know and potentially required to talk about. You should share your opinion on how it can help with business and revenue growth and share some specific examples of the areas where it can make an impact. If you’ve helped to do this in a previous role, this is also a good time to share that.

When did you face a challenge in dealing with unstructured data and how did you solve it?

A key way in which an interviewer will gauge your suitability for a role is by asking about previous situations that you’ve dealt with at work. In data engineer scenario-based interview questions like this one, you are being asked to talk about a challenge and share how you approached finding a solution.

As with any interview question based on a past struggle, you should focus your answer on how you overcame the challenge and what you learned from it. This demonstrates that you’re practical and good at problem-solving, along with the fact that you’re not someone who repeats mistakes.

Have you ever played an active role in solving a business problem through the innovative use of existing data?

Lead data engineers are expected to be innovative and proactive, leading projects and helping businesses solve problems using data. This question is looking for examples in your career where you’ve demonstrated this ability and should be answered by talking through how you noticed the problem, what you proposed, how you deployed your solution and the impact that this made.

Summary

The role of a lead data engineer is an exciting position, offering chances to work with large amounts of data, take the lead in projects and manage other engineers and analysts. It’s a great opportunity for engineers who enjoy practical work with data but also who have good people skills and are ready to take the lead on projects and briefs.

If you want to succeed as a lead data engineer however, you need to be able to highlight your abilities and strengths in an interview process, which will be done through testing your technical skills and by how you answer interview questions. By researching the most common types of questions that candidates are asked for this role, and preparing answers that cover key points and help you appear more confident, you’ll give yourself the best possible chance of success when applying for new roles.

If you’re a data engineer looking for a job in the electronic embedded systems sector, KO2 is a specialist recruitment agency that can help you find your ideal role. Take a look at our current lead data engineer jobs or get in touch to speak to our team about how we can help.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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Linux Developer Interview Questions and Answers

Chris Oddy — Tue, 31 Oct 2023 10:31:37 +0000

Linux Developer Interview Questions and Answers

What you Need to Know

Linux is an open-source platform and family of operating systems that is used by programmers and engineers across the world. Candidates with experience working on and developing programs for Linux are in high demand, especially in sectors where Linux is commonly used.

Linux is often used in embedded systems and devices, so at KO2 we’ve had a lot of experience understanding what is required of candidates in Linux developer jobs and how they can perform best in interviews. Researching the most common Linux interview questions and answers is a key part of this, as it helps you to be prepared for what the interview might involve and prepare answers and examples in advance that will make the process run smoothly.

In this article, we explain the main roles and responsibilities of a Linux developer and then explore some key technical Linux job interview questions and answers to help you prepare.

What is a Linux Developer?

A Linux developer is a specialist software developer or programmer who works predominantly on a Linux operating system. Linux is an open-source operating system kernel that is used in a range of operating systems, and Linux developers write code and create programs that are designed for these.

As a Linux developer, you’ll usually have a general background in computer science or software development and have developed a specialisation through working on projects that use Linux operating systems. You can write code that is compatible with Linux in a range of programming languages, such as C, Python or Java, but the Linux ecosystem is quite complex, so it’s a role that most candidates aim for after at least a few years of general programming experience.

What Does a Linux Developer Do?

Linux developers have a range of responsibilities that revolve around creating and maintaining software used by Linux operating systems. They can be employed across a variety of sectors in the engineering industry, including embedded systems which are operated by Linux.

Different industries and businesses will require developers for different tasks, such as system administration or kernel development, so what a Linux developer does day-to-day will really depend on their employer. However, some responsibilities are similar across different roles, which are listed below.

Responding to briefs for new Linux software
Adapting and improving existing software designed for Linux operating systems
Developing new software that is compatible with Linux operating systems
Debugging and refining Linux-compatible software
Creating programs and applications for Linux operating systems
Recording the development process used to create new Linux programs
Identifying and fixing issues that occur with existing Linux programs and applications
Customising existing Linux operating systems to facilitate specific tasks
Writing user guides for new Linux software
Remaining informed on new Linux updates and operating systems and adapting software to be compatible with new features

Linux developers will often work independently when they’re programming, developing software or debugging code. However, most Linux developers will be part of a team that works together on software projects, so their role will likely also involve collaborative tasks.

Linux Job Interview Questions and Answers

Depending on your level of experience, the kinds of Linux interview questions you get asked in your interview can range from simple questions about the platform and its features to specific questions about the kinds of programs you can create and how you’d go about navigating tasks or issues. Below are some common examples of the kinds of questions you might be asked in a Linux developer interview, and how to answer them.

What are some of the basic elements or components of Linux?

This basic Linux interview question assesses your general knowledge of the key elements of Linux. These include:

The shell
The kernel
The GUI
Any application programs
Various system utilities

What makes Linux different from Unix?

Unix and Linux are similar operating systems, but it’s important for a Linux developer to be able to explain the difference, and usually also why Linux is better suited for the role they’re applying for. The main difference is that Unix is proprietary, licensed software whilst Linux is an open-source platform that is free to use, presenting more flexibility and freedom to programmers.

What are two types of Linux User Mode?

This is another basic Linux interview question that gauges your understanding of the operation system. There are two primary user modes in Linux, Kernel Mode and User Mode, which you switch between if you’re performing a privileged operation or accessing hardware resources.

The default mode is User Mode which is used to run user-level applications, processes, and programs. Kernel Mode is used to execute the operating system’s kernel and gives the programmer full access to the hardware and system resources.

What is Linux Shell? What types of Shells are there in Linux?

In Linux, a shell is a program that lets you interact with the operating system through a command-line interface as an intermediary. Understanding the different types of Linux shells and their uses is important for a Linux developer, so you’ll need to be able to list several and explain when you’d use them.

Some examples of Linux shells are:

Bash – Bourne Again SHell

The default shell that is most commonly used by Linux developers because of its versatility.

Zsh – Z Shell

An extended version of bash that comes with advanced customisation and additional features

Csh – C Shell

A Linux shell that has a syntax like the C programming language, often used for interactive tasks

Fish – Friendly Interactive SHell

A particularly user-friendly shell with a simplified scripting language that includes features like autosuggestions and syntax highlighting.

What are the process states in Linux?

There are five process states in Linux that are invoked when an application needs to run. These are:

‘D’ = UNINTERRUPTABLE_SLEEP
‘R’ = RUNNING & RUNNABLE
‘S’ = INTERRRUPTABLE_SLEEP
‘T’ = STOPPED
‘Z’ = ZOMBIE

If you’re asked this question in an interview for a Linux developer job, you should be able to name some, if not all of these process states and explain the contexts in which they would be running.

Why is Linux regarded as being more secure than operating systems?

This is another interview question that investigates the candidate’s understanding of Linux and its features. In this instance, you’re being asked about the security of Linux operating systems and why they have an advantage over others, which demonstrates that you have more than just general knowledge of Linux.

Some of the reasons that Linux is regarded as more secure include the log history that allows you to see the system file specifics, the smaller number of users, the fact that only a few people have access to the systems, and the iptables feature.

What are the different modes in the VI editor used for?

Every Linux operating system comes with a text editor called the Visual Editor, or VI, which has three main modes. As a Linux developer, you should be able to explain what each of these is used for and give examples of the kinds of code you might write for each.

Regular Mode is the default mode of the text editor and should be used when you’re typing commands for specific functions. Edit Mode is used to edit text or type text into a file, and Replacement Mode stores files and command implementation, as well as running files with distinct parameters.

What is the advantage of open source?

Linux is a collection of open-source operating systems, and as a Linux developer, you’ll be expected to have an understanding of how this makes it different from other operating systems and what the advantages of open source are. You can talk about some of the general advantages, such as lower starting costs and more flexible development, or you can give your personal preferences about why you think open source is advantageous.

Advice for Candidates

In a Linux interview, you’re likely to be asked a fair amount of technical questions and will usually be presented with a technical challenge as well. It’s important to remember that being unable to answer all these questions correctly isn’t essential to doing well in the interview, as you’ll also be being assessed on how you approach solving problems and the methods you use to find solutions.

Alongside the technical assessment of a Linux developer job interview, you’ll also likely be asked more scenario-based and behavioural questions that investigate your soft skills and approach to work. When answering these Linux interview questions, it’s always a good idea to use examples to support your points and give evidence for how you’ve used skills like leadership and communication. Being able to illustrate your reasoning with past examples for questions asking how you’d respond to a work situation will also help to improve your answers.

Advice for Clients

When it comes to recruiting Linux developers for your company, you might find that some of the most talented candidates have to be sourced unconventionally. Traditional recruitment methods can be effective, but you may also want to search for experienced developers on platforms like GitHub or StackOverflow, where you’ll be able to see examples of their work.

With this in mind, also be aware that some developers do not like to share code publicly, so don’t base your assessment purely on an online profile. You can also get a good idea of a candidate’s suitability by looking at their LinkedIn profile or asking connections in your sector if they have experience working with them.

The open-source developer job market is incredibly competitive, which means that clients have to make sure they put in the effort to impress their candidates if they want to attract and retain the best employees. Throughout the interview process, make sure that you’re promoting the employment experience at your company as much as you’re vetting the applicant.

Summary

Linux interview questions might not only come up in an interview for a specific Linux developer role; you may also be asked to talk about the operating systems and associated software for general software development or programming positions. If you’re applying for a role that involves working with Linux, brushing up on your technical knowledge and preparing answers to common Linux interview questions is one of the best ways to ensure your job interview goes as well as possible.

If you’re a software developer with Linux experience preparing to apply for new roles, KO2 is a specialist recruitment agency in the electronic embedded systems sector that can help you find the ideal next opportunity. Browse our current available Linux jobs or get in touch and speak to the team about how we can help.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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Matter Standard: A Guide for Engineers

What is the Difference Between C and Embedded C Programming?

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Firmware Engineer Interview Questions and Answers

Chris Oddy — Tue, 31 Oct 2023 10:28:25 +0000

Firmware Engineer Interview Questions and Answers

What you Need to Know

Firmware engineering is an industry sector that combines knowledge of hardware and software development, focusing on the development of systems that help things like embedded devices operate. It’s an exciting area of the industry to be working in at the moment, especially in embedded systems where we’re seeing a lot of innovation with the internet of things and the applications of embedded devices in new areas.

If you’re looking to get into firmware engineering, or are applying for a new role in this sector, you’ll need to complete interviews as part of the process. Job interviews can be daunting, especially when they involve a technical component like most engineering interviews, but being prepared for the kinds of questions you may be asked is one of the best ways to mitigate these nerves and improve your experience.

In this article, we quickly review the role of a firmware development engineer and then explain how to answer some of the most common firmware engineer interview questions.

What is a Firmware Engineer?

Firmware engineers are a type of engineer that works predominantly with the firmware used to operate electronic devices. From developing the software needed to make the device functional, to installing and updating the firmware to ensure continued functionality, it’s a role that requires specific expertise with the entire firmware development process.

A firmware engineer will often be hired to deliver a specific project outcome or find a solution that a company needs, and can work across a range of different industries. The role is primarily based around software engineering, but also requires a good understanding of device development and requirements so that the resulting firmware is compatible.

What Does a Firmware Engineer Do?

The responsibilities of a firmware engineer will depend on the kind of projects they’re working on and the industry sector that they’re employed in. Some engineers might work in teams primarily designing and developing software for devices, whilst others may be in charge of updating or debugging devices.

Despite differences between specific roles, there are general tasks that the majority of firmware engineers complete as part of their job. This includes:

Designing firmware in response to client briefs and requests
Finding firmware solutions for specific pieces of hardware
Developing device software in line with necessary quality and safety standards
Testing and troubleshooting firmware systems to improve performance
Completing code reviews, sharing feedback and identifying necessary changes
Improving and updating existing firmware design
Monitoring firmware performance and identifying areas for improvement
Collaborating with hardware engineers to ensure integration of firmware and device goes smoothly
Working to project deadlines and delivering progress updates to managers
Writing up firmware operation instructions and technical documentation

Firmware Engineer Interview Questions

Interview questions for firmware engineers will likely range from technical questions and problems to more scenario-based situations where you’re asked to describe experiences from previous jobs or share how you’d handle a hypothetical situation. Below, we’ve included a range of types of firmware engineer interview questions to give an overview of what you might be asked when applying for a role.

Can you describe the steps required to create a firmware architecture?

This is a classic example of an interview question for a firmware engineer, gauging your understanding of what is required when designing firmware architecture. You should take the interviewer through your process of architecture design, explaining the reasons behind each of your choices and highlighting the benefits of this approach as well.

If a system is blank, how might you debug it?

This firmware engineer interview question is an example of the kinds of technical questions you might be presented with to assess your experience and knowledge of firmware engineering. You should take the interviewer through your blank system debugging process and explain the reasoning behind each stage, and may also benefit from giving an example to illustrate your point.

Can you share code-testing programs you have worked with?

Firmware engineers need to be confident testing and debugging the code that they’re developing, which is why experience with code-testing programs is preferred. You should talk through the programs you’re familiar with and the kinds of projects you’ve used them for, explaining how these have helped to streamline your testing process.

How do you test your firmware before installing it?

Testing code is a key part of a firmware engineer’s role, so you’re likely to be asked several questions about this stage of the development process. For this interview question, you should talk the interviewer through your testing process, referencing any tools or programs that you use, and explain the intention of each stage and what it ensures. This is another answer where being able to use an example of when you have put this approach into practice can be really useful.

What programming languages have you used to write firmware?

A firmware engineer needs to be familiar with at least one compatible programming language in their role, so this question is used to determine whether you have the right skills and background to take on this key responsibility. The most common programming languages used in firmware development are C, Java and Python, so being able to demonstrate experience in one of these is ideal. If you can talk about a previous project where you used a specific programming language, and explain your choice, this can make your answer even better.

Can you tell us about your recent firmware programming projects?

The majority of interviews for a firmware development engineer job will ask you to talk about previous projects that you have worked on. This is an opportunity for you to highlight some of the best work that you’ve done, explain the responsibilities you have taken on in previous roles, and highlight the kinds of projects you’re enthusiastic about or especially proud of

Interviewers for firmware engineer jobs are also often looking for candidates who demonstrate enthusiasm for their industry outside of work. As well as talking about projects from your previous or current roles, you can also talk about any relevant tasks you’ve been working on as a hobby, which helps the interviewer to get to know you better as a candidate.

How do you plan and prioritise your work?

Firmware engineers tend to work as part of a larger team, which means they may be given multiple tasks to work on at once or be responsible for meeting internal deadlines that allow other employees to continue with project development. Being organised and able to prioritise tasks is a really useful skill for firmware engineer jobs, so this is a question that it’s useful to be prepared for.

In your answer, explain your planning process to the interviewer and how you approach assigning priorities. If you can give examples with some hypothetical tasks, this can help the interviewer get a better idea of your methods.

Can you share an example where you had to work with a difficult piece of code?

Being asked to talk about challenging experiences at work is a classic interview question for embedded firmware engineers. Interviewers do this to learn more about how you approach problems at work, both from a practical point of view and to understand more about your personal approach to failure and overcoming this.

Talk about an example from a previous role where you were challenged by a piece of code and explain what made the task difficult. Then focus on what you did to overcome it and why this solved the problem, focusing on what you learned and ideally how you then applied this learning to future projects. This not only demonstrates resilience but also that you’re a candidate who uses challenges as an opportunity to progress.

If you were to create a piece of firmware that caused damage to a device, how would you handle the situation?

This scenario-based question for a firmware engineer looks at how you would react to a problem at work, which in this case is creating a piece of firmware which has damaged a device. It’s important to be honest when answering this question, but also to think carefully about how to make the best impression with your answer.

Ideally, you’ll talk about how you’d alert necessary team members about the issue and what steps you would take to minimise damage. For this kind of question, you should also highlight what you’d do to avoid making the same mistake again in the future.

How well do you perform under pressure and what is your strategy for managing deadlines?

This is a classic interview question across a range of industries and is used by engineering interviewers to determine whether you’d be a good fit for a work environment that can be fast-paced and stressful at times. You should be honest about whether this is a working environment that you perform well in, but even if it isn’t, try and reframe the question to talk about the mechanisms you use to deal with stress and still get work done.

Being able to manage deadlines is applicable to all firmware engineers even if they’re not in a stressful situation, so you should prepare an answer to this that explains your process and why it works well for you.

How do you keep up with the latest trends in firmware engineering?

This question may be asked in an interview for firmware engineer jobs as a way of gauging your general industry knowledge and your enthusiasm for the sector. It’s a good idea to be able to talk about the ways that you stay up-to-date and any particular trends that you are most interested in, which demonstrates a genuine interest in firmware engineering and a commitment to creating innovative systems or using new approaches in your role.

Advice for Clients

Job interviews are a necessary part of the firmware engineer hiring process, and if you’re the one doing the hiring it’s still important to prepare to meet and assess potential employees. Having a defined structure and set of questions for the interview not only makes the process fairer for all applicants, but also ensures that you don’t miss anything important when deciding whether someone is the right fit for your business.

Firmware engineers require a combination of software and hardware knowledge, so it’s important to make sure you’re targeting both of these areas with your questions. A lot of engineer interviews also include a practical task for candidates to complete, which can be very useful when assessing suitability for firmware engineer jobs.

Whilst technical questions are an important part of interviews, you should also include some scenario-based questions to help get an idea of whether a candidate is going to be a good culture fit. These might involve asking them how they’d react in certain workplace situations or delving deeper into what motivates or challenges them as an employee.

Advice for Candidates

The role of firmware engineer requires a lot of technical knowledge of both software and hardware, so it’s a good idea to start your interview preparation early so that you have enough time to cover everything you might be asked about. Try and set yourself several questions every day and regularly review your answers to previous questions as well.

If you’re feeling nervous about an interview, or you don’t have much experience, practising mock interviews is an excellent strategy for improving your confidence and performance. Ask a friend or even a colleague to help you, or consider using an online service where you’ll get professional advice and feedback.

Remember that a job interview is as much an opportunity for you to ask questions as it is for the interviewer to assess your suitability for a firmware engineering role. Prepare a couple of questions beforehand that give you more information about the role, the company and the employment experience so that you get a good idea of whether you’ll be a good fit for the organisation.

Summary

Preparing for a firmware engineer interview is a necessary step in ensuring that you do well. For roles like this, you’re always going to be asked technical questions and likely asked to complete coding tasks as well, and failing to prepare for these will severely impact your chance of success.

If you’re a candidate applying for firmware engineering jobs or thinking about making a career change in this area, KO2 is a specialist recruitment agency that can help you find your ideal role in the embedded systems sector. Take a look at our current firmware engineer jobs, or get in touch to speak to the team about how we can help.

Chris Oddy

About the Author

Chris is an award-winning recruitment consultant who has specialised in the electronics and embedded systems sector since 2008. Chris is passionate about technology and customer service.

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Software – KO2 Recruitment

Matter Standard: A Guide for Engineers

Matter Standard: A Guide for Engineers

What is the Matter Standard?

The Advantages of Matter

What are Matter Compatible Devices?

What Engineers Should Know About Matter

Summary

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What is the Difference Between C and Embedded C Programming?

What is the Difference Between C and Embedded C Programming?

What is C Programming?

Advantages of C

Disadvantages of C

What is Embedded C Programming?

Advantages of Embedded C

Disadvantages of Embedded C

What is the Difference Between C and Embedded C?

Hardware Dependency

Scalability

Programming Style

Memory Usage

Processing Power

Standard Libraries

Interrupt Handling

Compilers

Bug Fixing

When to Use C and Embedded C

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The Best Skills for Embedded Software Engineers

The Best Skills for Embedded Software Engineers

Embedded Systems Design

Programming Languages

Internet of Things (IoT)

Microcontroller Knowledge

Understanding of Real-Time Operating Systems

Electrical Engineering Experience

Testing And Debugging

Hardware Experience

Signal Processing

Communication Protocols

Control Systems

Software Development Methodologies

Cybersecurity

Machine Learning

Soft Skills Needed for Software Engineering

Teamwork

Time Management

Continuous Development

Communication

Problem-Solving

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Coding Standards Best Practices and How to Uphold Them

Coding Standards Best Practices and How to Uphold Them

What are Coding Standards Best Practices?

Why Are Coding Best Practices Important?

Improved Code Quality

Reduced Costs

Ensured Compliance

Easier Collaboration

Secure Code

Efficient Development

9 Key Coding Best Practices

Naming Conventions

Code Readability

Code Comments and Documentation

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