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 systemsRequired 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 advantageDesirable 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