Battery Engineer
The Role We are seeking an experienced High Voltage Battery Engineer with hands-on expertise in EV and/or BESS battery systems. This is a practical, site-based engineering role focused on the diagnosis, repair, safe isolation, dismantling, and handling of high-voltage lithium-ion battery systems (400V–1000V+ DC). You will operate as the HV technical authority on site, ensuring safety, compliance, and best practice across all projects. Key Responsibilities * Diagnose, repair, dismantle, and rework lithium-ion battery packs used in EVs and BESS units * Carry out safe isolation and discharge of HV systems (typically 400V–1000V+ DC) * Identify faults at cell, module, pack, and BMS level within containerised and cabinet-based BESS systems Essential Requirements High Voltage Battery Experience * Minimum 3 years’ hands-on experience working with high-voltage lithium-ion battery systems * Direct experience with EV battery packs and/or BESS units * Proven ability to diagnose, repair, or dismantle HV battery systems * Experience working under formal HV safety rules and permit-to-work systems Technical Knowledge Strong understanding of: * Lithium-ion battery architecture (cell / module / pack) * Battery Management Systems (BMS) * HV isolation, testing, and fault-finding * Containerised and cabinet-based BESS architectures * IEC, BS EN, and ISO 45001 standards Desirable * Experience working with large-scale BESS units * HV Authorised Person (AP) status or equivalent * Background in recycling or end-of-life processing of EV or BESS batteries