Position Title: Battery Test Engineer Duration: Contract Location: Banbury, OxfordPlease note this role includes shift work, Earlys and Lates, please enquire for more information. Applicants MUST have proof of immediate, on-going and valid eligibility, to work full time, and travel within, the UK Role Overview:Our Client is seeking an experienced Engineer to support Performance End of Line (PEOL) and End of Line (EOL) testing, commissioning, and fault resolution of high-voltage power systems.This is a hands-on, delivery-focused role supporting both prototype and production build phases.The position is primarily focused on executing and supporting PEOL / EOL testing of HV power systems, with additional support to related battery and system-level testing as required. The Engineer will be responsible for:Executing PEOL and EOL performance testing of high-voltage power systemsPerforming system-level diagnostics, fault finding, and root cause analysisValidating CAN and XCP communications and system interfacesSupporting EOL / PEOL test execution, result analysis, and reportingAnalysing test data to identify performance issues and support engineering resolutionSupporting battery or subsystem testing as required to validate PEOL outcomesDeveloping and maintaining commissioning procedures, test reports, and integration documentationInterfacing with internal stakeholders to resolve technical issues and ensure timely delivery of milestones Technical Requirements:Strong understanding of