Generator Engineer (Field Service Mechanical Engineer)

Location: UK (National travel required)
Travel: Frequent travel & overnight stays required
Reporting to: Operations Manager

The Role

We are seeking an experienced Generator Engineer to support the maintenance, overhaul, and reliability of a fleet of reciprocating gas engine generator assets.

This is a field-based role working across the UK on generation facilities ranging from 100kW to 20MWe, with individual units up to 2.5MWe.

You will play a key role in ensuring maximum availability, efficiency, and performance of generation assets, working closely with operations and engineering teams.

Key Responsibilities

• Carry out planned maintenance, servicing, and breakdown response on generation assets

• Lead and support major engine overhauls

• Diagnose and repair mechanical and electrical faults

• Replace major components including:

  • Cylinder heads
  • Pistons and liners
  • Turbochargers
  • Pumps and intercoolers

• Support operations teams with technical guidance and training

• Conduct emissions monitoring and performance optimisation

• Assist with recommissioning of overhauled plant

• Maintain accurate service records, reports, and documentation

• Manage spares, stock levels, and parts ordering

• Ensure compliance with health, safety, environmental, and quality standards (HSQE)

• Supervise contractors where required

• Participate in call-out rota for emergency breakdowns

Key Duties

• Maintenance and repair of:

  • Gas engines
  • Pumps, motors, and auxiliary plant
  • Heat recovery systems
  • Electrical systems (LV, with HV exposure where trained)

• Fault finding across mechanical, electrical, and control systems

• Operation of HV switchgear (training provided if required)

• Implementation of RAMS, permits to work, and safe systems of work

• Supporting continuous improvement and reducing reliance on external contractors

About You

Essential Experience

• Proven experience working on reciprocating engines / power generation equipment

• Experience leading or supporting engine overhauls in a field-based role

• Strong fault-finding and diagnostic skills

• Multi-skilled with mechanical and some electrical knowledge

• Experience working with:

  • MWM / CAT / MTU engines (or similar)

• Familiarity with control systems (12V DC - 415V AC)

• Full UK driving licence

Desirable

• Gas Safe certification (or willingness to obtain)
• Experience with CHP or gas engine systems
• HV/LV electrical experience
• Experience in energy, uti