Generator Field Service Engineer

Thames Water; Greater London; On-site; GBP 40,000 - 54,000; Full time

Job summary

A leading water service company is seeking a Generator Field Service Engineer to maintain and repair CHP generators across the Thames Valley and London. Candidates should have experience with internal combustion engines, excellent diagnostic skills, and a full UK driving licence. This role offers a competitive salary up to £54,000 plus overtime opportunities and various employee benefits to support health and wellbeing.

Benefits

Competitive salary

Contributory pension

Generous annual leave

Performance-related pay

PPE and tools provided

Health and wellbeing benefits

Qualifications

• Ability to perform detailed diagnostics on engines and generators.
• Hands-on experience with internal combustion engine systems.
• Experience with CHP systems is desirable.

Responsibilities

• Maintain and repair CHP Spark Ignition generators.
• Ensure safety and minimal downtime during maintenance.
• Provide excellent customer service.

Skills

Knowledge of internal combustion engines

Diagnostic skills

Teamwork

Communication skills

Driving licence

Education

NVQ/C&G or mechanical engineering qualification

Electrical qualification

Job description

We currently have a great opportunity for you to join our waste treatment team as a Generator Field Service Engineer. As a successful candidate, your role will be to maintain, diagnose, repair and optimise the performance of a fleet of Combined Heat and Power (CHP) spark ignition biogas engines located across various Thames Water sites.

Due to the nature of this role with travelling in the Thames Water area, the ideal candidate can be based anywhere in the Thames Valley and the London area.

What you’ll be doing as a Generator Field Service Engineer

• To carry out the planned and unplanned maintenance of the fleet of CHP Spark Ignition generators within a geographical region, but not limited to.
• Work with current CHP support staff and suppliers to ensure all maintenance is carried out safely, with the least possible downtime and within budget.
• Completed service records and reports in an accurate and timely manner.
• Identification of parts required for the order, lubricants, and waste.
• Demonstrating a zero‑compromise attitude towards health, safety, and well‑being in all aspects of work.
• Ensuring excellent customer service.
• Working to benefit other team members with skills from the product training.

Base Location

Depending on your location, you can be based at any of our sites in the Thames Valley, Home Counties and the London area.

Working Pattern

45 hours per week, Monday‑Friday. The role also includes a standby rota which provides additional payment. You may earn overtime at time and a half or double rates.

You must have the ability to operate and optimise assets using engine/generator controls such as ComAp, DIA.NE and TEM Evo.

What you should bring to the role

To thrive in this role, the essential criteria you’ll need are:

• In‑depth knowledge of all aspects of the operation and maintenance of internal combustion engines.
• Ability to carry out thorough, comprehensive, and methodical diagnostics on engine, generator and associated systems.
• Competent to work to a high level of quality, alone or as part of a team.

To be successful, you will have the following skills and experience

• Ideally, NVQ/C&G or an engine manufacturer's qualification in mechanical engineering.
• Electrical qualification is an advantage, but not essential.
• Proven working ‘hands‑on’ experience with internal combustion engines and associated systems.
• Natural / Bio / AD Gas engine, CHP, and gas system experience is desirable but not essential.
• Good communication and interpersonal skills are required.
• Full UK driving licence.

What’s in it for you?

• Competitive salary offering up to £54,000 per annum, depending on your experience level.
• Opportunity to earn overtime at time and a half or double rates.
• All PPE and tools, plus the provision of a van when on duty and on call.
• Performance‑related pay plan directly linked to company performance measures and targets.
• Contributory pension – Defined Contribution – Maximum of 12% – 2x employee contribution.
• Annual leave: 24 days holiday per year, increasing to 28 with the length of service (plus bank holidays).
• Generous pension scheme through AON.
• Generous paternity leave, including 4 weeks paid and an optional 2 weeks unpaid.
• Enhanced maternity leave, 26 weeks full pay and 13 weeks half pay.
• Access to benefits to support your health and wellbeing, such as annual health MOTs, physiotherapy, counselling, Cycle‑to‑Work schemes, shopping vouchers and life assurance.

Who are we?

We’re the UK’s largest water and wastewater company, with more than 16 million customers relying on us every day to supply water for their taps and toilets.

We want to build a better future for all, helping our customers, communities, people and the planet to thrive. It’s a big job and we’ve got a long way to go, so we need passionate and skilled people committed to making a difference and getting us to where we want to be in the years and decades to come.

Learn more about our purpose and values

Working at Thames Water

Thames Water is a unique, rewarding and diverse place to work, where every day you can make a difference, yet no day is the same.

As part of our family, you’ll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

Real purpose, real support, real opportunities. Come and join the Thames Water family. Why choose us? Learn more.

We’re committed to being a great, diverse and inclusive place to work. We welcome applications from everyone and want to ensure you feel supported throughout the recruitment process. If you need any adjustments, whether that’s extra time, accessible formats or anything else, just let us know. We’re here to help and support.

When a crisis happens, we all rally around to support our customers. As part of Team Thames, you’ll have the opportunity to sign‑up to support our customers on the frontline as an ambassador. Full training will be given for what is undoubtedly an incredibly rewarding experience. It’s also a great opportunity to learn more about our business and meet colleagues.

Disclaimer: Due to the high volume of applications we receive, we may close the advert earlier than the advertised date, so we encourage you to apply as soon as possible to avoid disappointment.