​We’re looking for an experienced BESS O&M Service Engineer to support utility-scale Battery Energy Storage System (BESS) projects across the UK. This is a hands-on role focused onoperations, maintenance, troubleshooting, and performance optimisation, offering the opportunity to play a key role in the UK’s energy transition.

You’ll work across live BESS sites, supporting commissioning, maintenance, and emergency response activities, while also contributing to planning, documentation, and performance improvement from a home-office base.

What You’ll Be Doing

• Carry out preventive and corrective maintenance on BESS and associated infrastructure

• Perform remote operations to support maintenance and fault resolution

• Conduct site inspections, diagnostics, and testing using specialist equipment

• Ensure strict compliance with Health & Safety standards and UK HSE regulations

• Supervise subcontractors and ensure quality and compliance of third-party works

• Support commissioning, upgrades, and major repairs

• Review technical documentation and contribute to maintenance procedures, RAMS, and method statements

• Liaise with OEMs and suppliers on maintenance processes and technical clarifications

• Support annual maintenance planning for BESS assets

What We’re Looking For

• Minimum 2 years’ experience in O&M within BESS, energy storage, renewables, or the power sector

• Degree (or equivalent qualification) in an engineering discipline

• Strong technical knowledge of LV systems, inverters, EMS, and battery systems

• Training on battery systems and PCS equipment is highly advantageous

• ECS/CSCS card (or eligibility to obtain one)

• Working knowledge of UK Health & Safety regulations

• Full UK driving licence and willingness to travel nationwide

• Proactive, solutions-focused mindset

• HV operational experience is a plus