Location
Based anywhere in the Thames Valley, Home Counties, and London area, with travel to 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 a fleet of Combined Heat and Power (CHP) spark ignition biogas engines. You will carry out planned and unplanned maintenance across a geographical region, working closely with CHP support staff and suppliers to ensure maintenance is completed safely, efficiently, and within budget. 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 support team members by sharing skills gained from product training. The role requires operating and optimising 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.

Benefits
Competitive salary, performance-related pay linked to company targets, contributory pension scheme (up to 12% with 2x employee contribution), 24 days annual leave increasing to 28 with service plus bank holidays, generous maternity and paternity leave, access to health and wellbeing benefits including annual health MOTs, physiotherapy, counselling, Cycle to Work schemes, shopping vouchers, and life assurance.

About Thames Water
Thames Water is 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. We offer meaningful career opportunities, flexible working arrangements, and a diverse and inclusive workplace where you can make a real difference every day.

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, comprehensive diagnostics on engines, generators, and associated systems.
- Experience with natural/bio/AD gas engines, CHP, and gas systems is desirable but not essential.

About you
- Competent to work independently or as part of a team to a high standard.
- Good communication and interpersonal skills.
- Strong commitment to health, safety, and wellbeing.
- Ability to provide excellent customer service.
- Willingness to travel within the Thames Valley, Home Counties, and London area.

Qualifications
- Ideally NVQ/C&G or an engine manufacturer’s qualification in mechanical engineering.
- Electrical qualification is an advantage but not essential.
- Full UK driving licence is required.