Field Services Engineer

BESS Field Service Engineer - Energy Storage (O&M)

We’re looking for BESS Field Service Engineers to join one of the UK’s leading BESS O&M providers. This is a field-based role supporting a growing portfolio of BESS assets across the UK, reporting into the O&M Manager. With over 17 projects in the pipeline, this is a long-term, secure platform within a high-growth environment.

As a Field Service Engineer, you’ll be responsible for maintaining and optimising BESS assets, ensuring high availability and performance. You’ll carry out planned and reactive maintenance, support commissioning activities and act as a key technical resource across operational sites.

BESS Field Service Engineer - Key Responsibilities

• Deliver planned preventative and reactive maintenance on BESS assets
• Diagnose and resolve electrical and system faults across HV/LV equipment
• Carry out inspections, testing and annual capacity checks
• Monitor system performance and analyse operational data
• Support firmware and software upgrades across systems
• Identify and implement reliability and performance improvements
• Provide remote diagnostics and phone support where required
• Support commissioning and handover of new BESS sites
• Work closely with internal engineering teams to resolve complex issues
• Operate in line with UK safety standards and site procedures
• Conduct risk assessments and ensure safe systems of work
• Maintain accurate service records, reports and documentation
• Manage spare parts and inventory at site level
• Feed back field issues to support system and process improvements

BESS Field Service Engineer - Requirements

• Qualification in Electrical or Electro-mechanical Engineering
• Experience in maintenance within power generation, renewables or industrial environments
• Strong fault-finding capability across electrical systems
• Basic IT skills (Excel, Outlook, diagnostics tools, networking fundamentals)
• Willingness to travel across UK sites, with occasional overnight stays

Desirable:

• Experience working on BESS or power electronics (inverters, converters, transformers)
• HV/LV authorisation or experience working on high-voltage systems
• Understanding of networking (IP, VLANs, Modbus/TCP)
• 18th Edition / BS7671, Test & Inspect (2391) or similar
• HVAC / F-Gas knowledge

Why Apply?

They can offer you a permanent, secure future with a company due to deliver 15+ projects over the next 5-10 years. They have offices throughout the UK, with great benefits including annual bonus up, private healthcare, life assurance and a competitive base salary dependent on experience. Beyond package, they do a lot socially and it's a tight knit team. Culture is mission driven / hard working. Anyone working here will be at the forefront of the energy transition and making an impact.

If this peaks your interest, reach out today to have a confidential discussion and find out more about this opportunity!

Submit your CV or contact Holly Higginson ( h.higginson@mintselection.com ) to see if this could be the next step in your career.