Location
Based anywhere in the Thames Valley, Home Counties, and London area with travel across various Thames Water sites.

Hours
45 hours per week, Monday to Friday, including a standby rota with additional payment. Opportunity to earn overtime at time and a half or double rates.

Salary
Up to £54,000 per annum, depending on experience, plus overtime opportunities.

About the Role
Join Thames Water’s waste treatment team as a Generator Field Service Engineer responsible for maintaining, diagnosing, repairing, and optimising the performance of a fleet of Combined Heat and Power (CHP) spark ignition biogas engines. You will carry out planned and unplanned maintenance within a geographical region, working closely with CHP support staff and suppliers to ensure safe, efficient, and budget-conscious operations. Key duties include completing accurate service records and reports, identifying parts and consumables required, and demonstrating a zero-compromise attitude towards health, safety, and well-being. You will also provide excellent customer service and share skills gained from product training to benefit the wider team. The role requires the ability to operate and optimise assets using engine/generator controls such as ComAp, DIA.NE, and TEM Evo. Thames Water provides all PPE, tools, and a van when on duty and on call.

About Thames Water
We are the UK’s largest water and wastewater company, serving over 16 million customers. We are committed to building a better future for our customers, communities, people, and the planet. Thames Water offers a unique, rewarding, and diverse workplace with meaningful career opportunities, flexible working arrangements, and excellent benefits. Join us to make a daily difference while helping protect the world’s water for future generations.

Experience
- Proven hands-on experience working with internal combustion engines and associated systems.
- In-depth knowledge of operation and maintenance of internal combustion engines.
- Ability to carry out thorough, methodical diagnostics on engine, generator, and associated systems.
- Experience with natural/bio/AD gas engines, CHP, and gas systems is desirable but not essential.

About you
- Competent to work to a high level of quality independently or as part of a team.
- Good communication and interpersonal skills.
- Demonstrates a zero-compromise attitude towards health, safety, and well-being.
- Full UK driving licence.

Qualifications
- Ideally NVQ/C&G or an engine manufacturer's qualification in mechanical engineering.
- Electrical qualification is an advantage but not essential.
- Ability to operate and optimise assets using engine/generator controls such as ComAp, DIA.NE, and TEM Evo.