High Voltage Battery Engineer
High Voltage Battery Engineer Location: North West Salary: Competitive Salary + overtime Permanent Role Overview: We’re looking for a hands-on High Voltage Battery Engineer to work with EV and Battery Energy Storage Systems (BESS) in real-world, safety-critical environments. This is a site-based engineering role, focused on diagnosing, repairing, dismantling, and safely handling high-voltage lithium-ion battery systems (400V–1000V+ DC). You’ll act as the HV technical authority on site, ensuring work is carried out safely, compliantly, and to a high technical standard. Key Responsibilities: Diagnose, repair, dismantle, and rework HV lithium-ion battery packs (EV & BESS) Perform HV isolation, discharge, testing, and fault-finding Identify issues at cell, module, pack, and BMS level Support site-based assessment, remediation, commissioning support, and decommissioning activities Act as HV technical lead on site, ensuring RAMS and safe systems of work are followed Write, review, and implement RAMS for HV battery activities Produce technical reports, repair records, and battery condition assessments Support continuous improvement of HV battery handling and dismantling processes Essential Experience & Skills: Minimum 3 years’ hands-on experience with high-voltage lithium-ion battery systems Practical experience with EV batteries and/or BESS Proven background in HV battery diagnosis, repair, or dismantling Experience working under formal HV safety rules and permit-to-work systems Strong understanding of: Lithium-ion battery architecture (cell/module/pack) Battery Management Systems (BMS) HV isolation, testing, and fault-finding Confident writing and implementing RAMS Comfortable working in site-based, safety-critical environments Desirable: Strong BESS exposure HV Authorised Person (AP) or equivalent Experience in recycling or end-of-life battery processing Package: Competitive Salary Overtime available Pension scheme 20 days annual leave + bank holidays Ongoing HV training and professional development Access to a company vehicle Your CV will be forwarded to Jonathan Lee Recruitment, a leading engineering and manufacturing recruitment consultancy established in 1978. The services advertised by Jonathan Lee Recruitment are those of an Employment Agency. In order for your CV to be processed effectively, please ensure your name, email address, phone number and location (post code OR town OR county, as a minimum) are included