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, utilities, or industrial environments

Personal Attributes

Self-motivated and able to work independently

Strong problem-solving ability

Good organisational and time management skills

Flexible and adaptable to changing workloads

Confident supervising and supporting others

What You'll Be Doing Day-to-Day

Managing your own workload and travel across multiple sites

Supporting site teams with technical expertise and escalation support

Delivering first-time fixes wherever possible

Ensuring assets remain operational, efficient, and compliant

Performance Measures

Successful completion of engine overhauls and repairs

High levels of asset availability and performance

Strong fault resolution and first-time fix rates

Accurate and detailed record keeping

Positive customer and stakeholder feedback

The Business

The company operates across gas utilisation, power generation, and energy solutions, with a focus on delivering safe, efficient, and high-performing generation assets.

Their goal is to build a sustainable and profitable energy business, driven by in-house expertise across:

Generation & CHP

Gas processing

Renewable energy

Energy storage