Embedded Software Engineer

Embedded Software Engineer – Battery Management Systems
Location: Warwick – Onsite 3–4 days/week
Salary: £65,000–£75,000

About the Role
A rapidly expanding commercial energy infrastructure company is looking for an experienced Embedded Software Engineer to join their growing team. You’ll own firmware architecture for battery energy storage systems delivering mission-critical power resilience to customers across oil and gas and beyond — working with cutting-edge battery topologies and real-time power management algorithms.

Key Responsibilities

  • Design and develop embedded C/C++ firmware for battery management controllers, including state estimation, cell balancing, and thermal management
  • Evolve BMS architecture to support next-gen energy storage topologies, including ring-topology configurations and distributed cell monitoring
  • Implement and optimise real-time power control logic for fast-response systems (50–240kW+), ensuring 99%+ reliability and uptime
  • Define and debug power electronics interfaces, CAN/Modbus communication stacks, and safety-critical monitoring systems
  • Develop test strategies and provide field support for deployed systems

Required Experience

  • Embedded software development in C/C++ (microcontrollers, embedded Linux, or real-time systems)
  • Battery management systems, power electronics, or energy storage
  • Strong real-time fundamentals: interrupt handling, state machines, deterministic timing
  • Proficiency with CAN bus, Modbus, or RS485
  • Understanding of power electronics: voltage/current sensing, SoC/SoH estimation, thermal modelling
  • Git and embedded debugging/test automation tools
  • IEC 61508/functional safety experience a strong advantage

Desirable
Battery chemistry knowledge (Li-ion, LFP), industrial IoT/cloud-connected systems, FPGA/ASIC design, automotive/aerospace power systems, and wireless integration (Bluetooth/WiFi/4G/5G).

What They Offer
£65,000–£75,000, flexible/hybrid working, employee share scheme, modern engineering toolkit, and genuine technical autonomy within a small, fast-growing team. Plus pension, health insurance, and comprehensive benefits.

How to Apply
Send your CV and a brief cover letter, including links to relevant work (GitHub, past projects, technical write-ups).

Equal opportunities employer — applications welcome from all backgrounds.

Senior Electronics Engineer

Senior Electronics Engineer
Nottingham
£60,000–£70,000

The Role
We’re recruiting for an experienced Senior Electronics Engineer to join a dynamic hardware development team in Nottingham. This is a hands-on position where you’ll take ownership of analogue and digital electronics design for innovative handheld, battery-operated wireless devices.

You’ll be working with devices that connect seamlessly to a central comms hub, spanning IoT protocols such as Bluetooth and ZigBee. The role offers genuine opportunity to progress into team leadership over time, depending on your aspirations.

What You’ll Do
• Design and develop PCBs for wireless measurement and IoT devices
• Work across analogue and digital electronics domains (generalist approach)
• Manage board layout and design process using Altium
• Handle power supply and RF circuit design for battery-operated devices
• Follow robust engineering process and quality standards

What We’re Looking For
• Proven experience designing handheld electronics and wireless IoT devices
• Strong competency in analogue and digital circuit design (no deep power electronics or FPGA specialisation required)
• Hands-on PCB layout skills with Altium (or equivalent proven design tool experience)
• Ability to work independently and follow established design processes
• Communication skills and willingness to grow into a mentoring role

Working Arrangements
Hybrid: 3 days in the office (Nottingham), 2 days remote
Flexible start date (recruitment is moving quickly)

Package
• £60,000–£70,000 depending on experience
• Salary sacrifice options: Electric vehicle scheme, additional holiday
• Pension: Auto-enrolment scheme
• Benefits: Boot camp access, family bereavement support

Why Join
This is a true hardware engineering role with real technical depth. You’ll own the design process from schematic through production, working with a team that values competence and is committed to developing talent. If you want to grow into technical leadership, there’s a genuine pathway here.

To apply or for further information, contact KO2 Embedded Recruitment.

Senior Software Architect

Senior Software Architect
Royston, Hertfordshire

£90,000 basic + bonus (£100,000 OTE)

On-site with flexibility

Own the software vision for two global product platforms.

This is a rare opportunity to take genuine architectural authority across an entire software ecosystem, not a slice of it. Our client is a global manufacturer of advanced precision machinery used in demanding, highly regulated production environments worldwide. Their Royston site is the global design authority for the product line, supported by manufacturing operations in the United States and China, and R&D teams in the UK, Germany and Asia.

They currently run two established brands, each with its own software platform, its own hardware platform, and its own development team working largely independently. That is the problem you are being brought in to solve. You will be the person who understands both architectures at code level, forms a view on what should be shared, what should be merged, and what should stay deliberately different, and then sets the technical direction that takes those platforms into their next generation.

What you will actually be doing

  • Getting properly under the bonnet of two mature software architectures, mapping how they are built, why they were built that way, and where the structural risks and opportunities sit
  • Defining the technical vision and roadmap for the next generation software platform, aligned to how the business wants to differentiate its two brands commercially
  • Designing layered architectures that allow multiple teams, in multiple countries, to iterate quickly without tripping over each other
  • Producing system architectures and high level product specifications for solutions that must be robust, scalable and secure
  • Line managing a small UK software team of three to four engineers initially, with the German software team of a similar size expected to come under your remit over time
  • Acting as the technical bridge into the Asia based R&D function, particularly around a growing portfolio of AI driven feature development
  • Working across the full lifecycle, from early system definition through design, development, deployment and production support
  • Holding developers to account on implementation quality, challenging approaches and mentoring where it counts
  • Operating within an established Agile framework (SAFe or Scrum)

The portfolio you will influence spans customer facing application software, advanced imaging and signal processing algorithms, embedded firmware on custom electronics, and internal production and R&D tooling.

The technology

The core application software runs on Windows IoT and is predominantly C and C++, with C# also in the estate. Around it sit custom electronics with their own firmware and embedded operating systems, AI and machine learning workstreams, and an emerging interest in connected and cloud enabled services. Cyber security, and the Cyber Resilience Act in particular, is a live and serious topic, because these are connected products going into industrial networks.

What they need from you

This is not a requirements engineering role and it is not a Scrum Master role with a new title. The team will only follow someone whose technical credibility is beyond question.

Essential:

  • A career that started in hands on software development and progressed upwards. You do not need to code daily, but you must be someone who could, and who has been genuinely excellent at it at some point
  • Strong commercial development background in C, C++ and C#, with exposure to Python, .NET, Java or SQL welcome
  • Experience architecting software that controls physical hardware. This is not enterprise software. The code drives a machine that does something in the real world, and it has to interact properly with electronics, sensors and mechanics
  • Demonstrable experience operating as a software architect or technical authority within a complex, multi site organisation
  • The ability to influence, persuade and align global teams without direct line authority
  • Domain depth in at least one of: application software (industrial automation, networking protocols, UI frameworks), IoT and cloud development (Azure, AWS), AI and machine learning systems, cyber security, or embedded systems (RTOS, bare metal, hard real time)

Highly desirable:

  • Experience working across European, Asian and North American teams, and an instinct for how working and communication styles differ across those cultures
  • Time spent living or working abroad
  • Background in industrial automation, medical devices, robotics, defence or another regulated hardware led sector

Travel and working pattern

Expect to travel less than twenty percent of your time, but at least once a quarter, including regular trips to Germany and roughly quarterly visits to Asia. The role is primarily site based in Royston, with a discretionary hybrid policy in place.

What is on offer

  • £90,000 basic salary
  • Annual bonus scheme taking realistic total earnings to around £100,000
  • 25 days annual leave plus bank holidays
  • Early finish on Fridays
  • Enhanced work life balance policies, strong wellbeing focus and regular employee engagement events
  • Genuine international exposure across a global engineering network
  • Committed investment in training and technical development

Why this one is worth a conversation

Architect roles of this scope do not come up often. Most give you one platform, one team and a fixed direction. This gives you two platforms, three engineering locations, a blank sheet for the next generation, and the mandate to decide what it looks like. If you have built the technical foundation and you now want the influence that goes with it, this is the step.

Apply with your CV for a confidential discussion, or contact Laurence or Andrew at KO2 Embedded Recruitment Solutions.

Product Cybersecurity & Firmware Engineer

Product Cybersecurity & Firmware Engineer
Nottingham area (Hybrid WFH) | £60,000 – £70,000

KO2 is working with a well-established, global manufacturer of high-tech electronic products to appoint a Senior Product Cybersecurity & Firmware Engineer. This hands-on, senior role embeds cybersecurity and secure networking capability across a leading-edge product portfolio, sitting at the intersection of embedded engineering and product compliance.

The Role

You’ll lead cybersecurity assessment and remediation while directly contributing to the design, development, and validation of secure, network-connected product features — working closely with firmware, hardware, test, compliance, and quality teams to keep products ahead of evolving regulatory requirements.

Key Responsibilities

  • Lead cybersecurity assessments: identifying risks, vulnerabilities, and remediations
  • Design and implement secure, network-connected product functionality, including HTTPS/TLS and RFC-based networking
  • Write, review, and maintain production code for cybersecurity and network features
  • Support compliance with the Cyber Resilience Act, EN18031, and IEC 62443, including technical documentation
  • Investigate and resolve vulnerabilities; support patching and secure update strategies
  • (Desired) Provide technical leadership and best-practice guidance across engineering teams

What We’re Looking For

Essential:

  • 5+ years’ embedded software/systems engineering, including production code delivery, in a relevant wireless or high-tech industry
  • Experience with network-connected products and protocols (TCP/IP, HTTP/S)
  • Hands-on secure communications/cybersecurity feature implementation
  • Embedded C or C++ 11/14
  • RTOS experience (ThreadX, Azure RTOS, or FreeRTOS)
  • Bare-metal development and low-level driver experience
  • Familiarity with cybersecurity standards/frameworks (e.g. IEC 62443)
  • Strong diagnostic, problem-solving, and communication skills

Desirable:

  • Awareness of the Cyber Resilience Act and connected-product regulations
  • Experience supporting compliance, certification, or customer cybersecurity requests
  • ARM Cortex-M / STM32 experience
  • Exposure to SPI, I2C, I2S, UART, DMA
  • Hardware test and debug experience

Qualifications: Bachelor’s degree in Electrical Engineering, Computer Science, or equivalent experience.

Package: £60,000–£70,000 DOE | 37.5 hrs/week | Hybrid | Well-resourced team delivering a genuinely leading-edge development programme.

Get in touch with KO2 today with an up to date CV for a confidential conversation.

Electronics Engineer – Work from Home

Electronics Engineer | Birmingham
£48,000 – £60,000 | Home Based (Office Optional)

Our client is a Birmingham-based innovator whose novel sensing technologies convert real-world physical data into meaningful, actionable intelligence. Their work underpins strategic decision-making for some of the biggest companies in the world, giving them the hard evidence they need to move with confidence. This is a business built on precision engineering and rigorous data, not guesswork.

The Role

They are looking for an Electronics Engineer with embedded software capability to join their R&D team. You’ll work across circuit design, PCB layout, and firmware development, helping to build the next generation of sensing instrumentation from the ground up.

Work However Suits You Best

This is a genuinely flexible role. Home working is fully supported, and for most of the team it is essentially work from home, with the office there if and when you want it or need it. The only fixed requirement is a fortnightly R&D team meeting, usually a Friday morning, so you stay connected with the wider engineering group. Outside of that, how and where you work is largely up to you. Part-time applicants and flexible hours will also be considered.

What You’ll Be Doing

  • Collaborating on electrical circuit design and PCB layout, with an eye on minimising manufacturing variance downstream
  • Developing, debugging, and testing firmware for next-generation digital instrumentation
  • Diagnosing and resolving hardware and codebase issues, supporting the wider test engineering effort
  • Taking ownership of features and components within active project workstreams
  • Maintaining clear technical documentation and working within an agile, sprint-based environment

What We’re Looking For

  • A background in electronics engineering with genuine embedded software experience, comfortable working across both hardware and firmware
  • Confidence with PCB design and schematic capture tools such as Altium or KiCad
  • Solid understanding of circuit design, PCB layout, and digital signal processing (DSP)
  • Awareness of design for manufacture, including EMC, RoHS, and WEEE considerations
  • Firmware or systems programming experience, ideally C and/or Verilog
  • A methodical, detail-focused approach and the ability to manage your own workload independently

Good to Have

  • Experience designing to ATEX (IEC 60079-11) or environmental testing (IEC 60068-2) standards
  • PLC programming experience, particularly Siemens S7
  • Familiarity with STM32 or Zynq SoCs

If you want the autonomy of a home-based role without losing the option of office collaboration when it matters, this is worth a conversation.

Power Electronics Engineer

Power Electronics Engineer

Location: Norwich – mainly onsite role

KO2’s client is an innovative engineering company specialising in the design and development of advanced electronic solutions. Due to continued growth, they are looking to recruit an experienced Electronics Engineer to join their engineering team in Norwich.

This is an exciting opportunity to work on cutting-edge technologies, developing power electronics hardware for next-generation platforms. The successful candidate will play a key role in the design, development, validation, and production release of power electronic systems including DC-DC converters, traction inverters, battery chargers, and associated control and interface circuitry.

The role would suit an engineer with a strong background in power electronics who enjoys taking designs from initial concept through to production release while ensuring products are robust, manufacturable, cost-effective, and capable of meeting demanding performance and reliability targets.

The Role

As an Electronics Engineer, you will:

  • Design and develop power electronics hardware including DC-DC converters, traction inverters, battery chargers, and associated control, sensing, and communication circuits.
  • Support projects through the full development lifecycle, from concept and schematic design through PCB layout, prototyping, validation, and production introduction.
  • Design power stages, gate drives, analogue and digital interfaces, sensing circuits, protection systems, communications interfaces, and thermal management solutions.
  • Apply structured engineering methodologies including design reviews, tolerance analysis, derating, FMEA, and design-for-manufacture principles.
  • Ensure designs are robust against environmental variation, component tolerances, manufacturing variation, EMC requirements, and real-world operating conditions.
  • Collaborate closely with firmware, controls, systems, mechanical, manufacturing, and quality teams to deliver production-ready products.

Key Requirements

To be successful in this role, you will have:

  • Proven experience in power electronics hardware design within automotive, industrial, motorsport, electrification, or related sectors.
  • Experience developing DC-DC converters, traction inverters, battery chargers, or other high-power electronic systems.
  • Strong understanding of power electronics topologies including three-phase inverter bridges, resonant converters, bidirectional DC-DC converters, and PFC circuits.
  • Knowledge of design methodologies such as FMEA, derating, tolerance analysis, DFM, DFA, DFT, and design-for-cost.
  • Good understanding of electronics manufacturing processes including PCB fabrication, assembly, production tolerances, and yield optimisation.
  • Experience supporting products through prototype, pilot build, validation, and production release phases.
  • Experience using simulation tools such as MATLAB/Simulink, LTspice, Simetrix, or equivalent.
  • Experience with electronic CAD tools, ideally Altium Designer.
  • Strong understanding of PCB layout considerations for power electronics, including EMC, thermal management, isolation, grounding, creepage, and clearance requirements.
  • Experience with EMC compliance, debugging, and mitigation techniques.

What’s on Offer?

  • Opportunity to work on advanced electric drive and power electronics technologies.
  • Exposure to cutting-edge automotive and mobility projects.
  • Collaborative engineering environment with genuine technical challenges.
  • Competitive salary package.
  • Long-term career development opportunities within a growing technology-focused organisation.

Apply today with an up to date CV and a member of the KO2 Recruitment team will be in touch to discuss.

Senior Electronics Engineer

Senior Electronics Engineer

Salary: Up to £85,000
Location: Cambridge (Hybrid – 1 day per week from home)

KO2’s client is a highly respected, product-led company at the forefront of regulated technology development. They’re looking for a Senior Electronics Engineer to join a collaborative, forward-thinking engineering team working on complex, high-impact products.

This role is ideal for an engineer with strong experience across analogue and digital electronics, multilayer PCB design, firmware and an interest in FPGA development. You’ll be involved throughout the product lifecycle, contributing to innovative solutions in a highly regulated environment where precision, quality, and compliance truly matter.

The Role

  • Design and develop analogue and digital electronic systems for regulated products
  • Design multilayer PCB’s
  • Contribute to firmware development
  • Work within structured, compliant development processes
  • Collaborate closely with multidisciplinary engineering teams
  • Contribute to FPGA development as part of cutting-edge product designs

What They’re Looking For

  • A strong background in analogue and digital electronics
  • Experience with, or a genuine interest in, FPGA design using Verilog
  • A mindset suited to regulated industries, with a focus on quality, documentation, and compliance
  • Ability to work within a collaborative team environment

This is a fantastic opportunity for an Electronics Engineer who enjoys solving complex problems, working on meaningful products, and thriving in environments where engineering excellence is essential.

Benefits Package

  • Profit share (including a tax-free element)
  • 26 days holiday + bank holidays + buy/sell options
  • 9% employer pension contribution from day one
  • Private medical insurance
  • Death in service & income protection

Apply today to KO2’s client and play a key role in shaping the future of innovative, regulated product design.

Senior Firmware Engineer

Senior Firmware Engineer

Salary: Up to £70,000 DOE + Benefits
Location: Nottingham

KO2’s client is looking to add an experienced Senior Firmware Engineer to their growing engineering team. This is a technically focused senior role, offering a strong balance of hands-on embedded development (around 70%) alongside technical leadership (around 30%).

This opportunity suits an engineer who enjoys staying close to the code while also influencing architecture, project delivery, and technical direction.

You’ll be working on the development of embedded firmware across a range of platforms, contributing to system architecture, guiding project approach, and ensuring high standards of delivery. While this isn’t a purely managerial position, it does include responsibility for technical leadership, mentoring, and some line management.

Responsibilities

  • Hands-on development of embedded firmware using C
  • Working across bare-metal, RTOS, and embedded Linux environments
  • Contributing to and owning aspects of software system architecture
  • Setting technical direction, standards, and best practice
  • Supporting project estimation, planning, and delivery approach
  • Monitoring progress to ensure work is delivered to the required quality, time, and budget
  • Providing technical leadership and mentoring to engineers
  • Conducting 1-to-1s and line management where required
  • Collaborating with hardware, systems, and wider engineering teams

Experience Required

  • Strong commercial experience in embedded C / firmware development
  • Background working on bare-metal, RTOS, and Linux-based systems
  • Experience contributing to firmware or software architecture
  • Comfortable balancing hands-on development with leadership responsibilities
  • Able to estimate work and support technical project delivery
  • Strong communication skills and a collaborative mindset

What’s on Offer

  • Salary up to £70k DOE
  • A senior technical role with genuine influence
  • A strong mix of coding and leadership
  • Opportunity to work on complex embedded systems within a growing team

If you’re a Senior Firmware Engineer looking for a role that still values deep technical contribution alongside leadership, please apply or contact KO2 for more information.

 

Embedded Software Engineer

Embedded Software Engineer

Hybrid – One day every fortnight in Milton Keynes

£45,000 – £60,000

KO2’s client is looking for an Embedded Software Engineer to join their R&D team. The role is hybrid, with on-site time set at one day every fortnight. There are no fixed weekly office requirements.

You’ll work on embedded software for digitally controlled power supplies, writing Embedded C for bare-metal microcontrollers. The system uses two micros: one for the PFC stage and one for the inverter and final DC stage. You’ll take ownership of one of these areas and contribute to the wider embedded software development within the team.

You’ll also work alongside a Senior Embedded Software Engineer who will provide mentoring where needed. The client is open to applicants from junior through to senior level, as long as you can demonstrate solid skills in embedded software development. Power electronics experience is not required, but you should be comfortable with basic electronics.

What you’ll work on:

• Embedded C on bare metal

• Control software for digitally managed power supplies

• One of two microcontroller stages (PFC or inverter/DC stage)

• Collaboration with an experienced senior engineer on core embedded software tasks

Skills/ Experience needed:

• Strong Embedded C skills

• Embedded bare-metal or RTOS experience

• Interest in power-related products

• Ability to read electronic schematics and use lab equipment (bench PSU, oscilloscope)

• Experience with Git and Agile

If you want to work on real hardware, grow your embedded software skills, and join a flexible engineering team, this role will suit you well.

Electronics Engineer

Electronics Engineer
Location: Peterborough

Salary: £45,000 to £50,000 + Bonus

KO2’s client is a specialist engineering business in Peterborough that designs and develops complex, rugged machines built to operate reliably in harsh and demanding environments. With a small and focused R&D team, they are now looking for an Electronics Engineer to support the ongoing improvement and maintenance of an established product range.

This role is ideal for an engineer early in their career who enjoys practical, hands-on work, troubleshooting, and getting deeply familiar with existing hardware. You will work closely with an experienced hardware engineer to understand product architecture, investigate issues, and implement hardware-related improvements. The work is varied, workshop-focused, and centres on problem solving rather than designing brand-new PCBs from scratch.

There is also potential to support a new product development programme being run from their Bristol team, depending on workload and your interests.

Role Overview
• Continuous improvement and maintenance of current ruggedised products
• Hands-on troubleshooting, fault investigation and root-cause analysis
• Instrumenting, testing and modifying existing hardware to resolve issues
• Engaging with firmware and software colleagues to support system-level behaviour
• Interacting with Raspberry Pi and STM32-based architectures
• Prototyping, soldering and workshop tasks when needed
• Understanding existing schematics, system layouts and hardware behaviours

Skills and Experience
• Degree in electronics or a closely related discipline, or equivalent experience
• Knowledge of Raspberry Pi and STM32-based hardware platforms
• Comfortable working hands-on with electronics: multimeters, oscilloscopes, soldering and instrumentation
• Able to engage with firmware and software at a basic level (no full coding expected)
• Strong troubleshooting mindset and a practical approach to problem solving
• Suitable for someone with roughly two to four years’ experience or a capable junior engineer
• Driving licence required due to site location

Package
• Salary between £45,000 and £50,000 depending on experience
• Exceptional performance-based bonus scheme, typically delivering between one and two months’ pay in recent years
• Onsite role with free parking

Apply today with an up-to-date CV and a member of the KO2 team will be in touch to progress your application.