Embedded Software Engineer

KO2 Embedded Recruitment Solutions Ltd

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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.

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