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.

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