High Voltage Battery Engineer – EV & BESS Systems OT

High Voltage Battery Engineer – EV & BESS Systems - Manchester - £55k + OT

Role: HV Battery Engineer

Location: Manchester

Job Type: Full-time, Permanent

An established specialist within the lithium-ion battery and energy storage sector is seeking an experienced High Voltage Battery Engineer to join its growing Manchester-based team.

The business operates within the circular economy, focusing on the safe handling, diagnosis, repair, remediation, and end-of-life processing of high-voltage battery systems from Electric Vehicles (EV) and Battery Energy Storage Systems (BESS).

This is a hands‑on, site‑based engineering role working with high‑energy HV systems (400V–1000V+ DC) in operational environments. The position requires strong technical capability, formal HV safety awareness, and the ability to act as the technical authority on site.

You will take responsibility for the safe diagnosis, repair, dismantling and assessment of lithium‑ion battery packs across EV and BESS applications, both at workshop and customer sites.

This is not a design role — it is practical, field‑focused and safety‑critical.

• Diagnose and repair lithium‑ion battery packs (cell, module, pack and BMS level)
• Carry out safe isolation and controlled discharge of HV systems (400V–1000V+ DC)
• Support dismantling and rework of EV and containerised BESS systems
• Identify faults within Battery Management Systems (BMS)
• Attend customer and operational sites for assessment, remediation and decommissioning work
• Act as HV technical lead on site
• Ensure correct procedures, permits and RAMS are followed
• Support controlled shutdown and safe dismantling of modular/containerised systems

• Write, review and implement RAMS for HV operations
• Ensure compliance with HV legislation, IEC / BS EN standards and ISO 45001
• Lead toolbox talks and enforce safe systems of work
• Operate within formal HV permit‑to‑work systems

• Produce detailed technical reports and condition assessments
• Maintain accurate records of HV battery assets and interventions
• Contribute to improvements in tooling, processes and safety procedures
• Support development of training and best practice around HV battery handling

• Minimum 3 years’ hands‑on experience with high‑voltage lithium‑ion battery systems
• Direct experience with EV battery packs and/or BESS systems
• Proven experience diagnosing, repairing or dismantling HV battery systems
• Experience working under formal HV safety rules

• Strong understanding of:
• Lithium‑ion battery architecture (cell / module / pack)
• Battery Management Systems (BMS)
• HV isolation, testing and fault‑finding
• Containerised or cabinet‑based BESS systems

• Experience writing and implementing RAMS
• Strong risk awareness around high‑energy DC systems
• Comfortable working in operational, safety‑critical environments
  
  HV Authorised Person (AP) status or equivalent
• Experience with in BESS environments
• Experience in battery recycling or end‑of‑life processing
• Experience in live site environments
• 20 days annual leave + bank holidays
• Access to company vehicle (role dependent)

If this is of interest please apply on Linked In or email