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