Generator Field Service Engineer

Thames Water Utilities Limited; Rickmansworth, Reading, Swindon; On-site; GBP 44,000 - 65,000; Full time

Benefits offered by this job

PPE provided and tools

Company van on duty and on call

Annual leave 24 days increasing with 2

Generous pension scheme

Paternity / Maternity leave

Job summary

Thames Water is offering a permanent, full-time Generator Field Service Engineer role covering a fleet of CHP spark-ignition biogas engines across Thames Water sites. You will maintain, diagnose, repair and optimise performance while handling service records, part identification and on-site safety.

The role involves travel within the Thames Valley area, 45 hours per week, standby rota with extra pay, and potential overtime. A UK driving licence is essential.

Qualifications

• In-depth knowledge of operation and maintenance of internal combustion engines.
• Ability to carry out thorough, comprehensive diagnostics on engine and generator systems.
• Ability to operate and optimise assets using engine/generator controls (ComAp, DIA.NE, TEM Evo).
• Competent to work to a high level of quality, alone or as part of a team.

Responsibilities

• Carry out planned and unplanned maintenance of CHP Spark Ignition generators across a geographical region.
• Collaborate with CHP support staff and suppliers to ensure maintenance is safe, timely and within budget.
• Complete service records and reports accurately and promptly.
• Identify parts, lubricants and waste required for orders.
• Demonstrate a zero-compromise attitude to health, safety and wellbeing.
• Share knowledge with team members using product training.

Skills

Engine maintenance

Diagnostics

Driving licence

Electrical qualification

Teamwork

Education

NVQ/C&G or engine manufacturer qualification

Tools

ComAp

DIA.NE

TEM Evo

Job description

Maple Lodge - Rickmansworth - WD3 9SQ, Reading STW - RG2 0RP, Swindon - SN2 2DJ

Job title Generator Field Service Engineer Ref 44650 Division Asset Operations & Capital Delivery Location Maple Lodge - Rickmansworth - WD3 9SQ, Reading STW - RG2 0RP, Swindon - SN2 2DJ Contract type Permanent Full/Part-time Full-time Hours 45 Salary Competitive salary between £44,000 to £65,000 per annum depending on skills and experience. Job grade A Closing date 02/10/2026

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 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.
• Complete service records and reports in an accurate and timely manner.
• Identifying parts required for the order, lubricants, and waste.
• Demonstrate a zero-compromise attitude towards health, safety, and well-being in all aspects of work.
• 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 area.

Working Pattern - 45 hours per week, Monday-Friday. Plus, there is the inclusion of a standby rota for which you will receive additional payment. Plus, there is the opportunity to 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 and 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.
• Ability to operate and optimise assets using engine/generator controls, such as ComAp and DIA.NE and TEM Evo.
• 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 working 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 between £44,000 and £65,000 per annum depending on skills and experience.
• Standby rota payments & Overtime opportunities can increase this earning potential by up to a further £13,000 - £15,000 per annum upon completion of essential company training.
• Performance-related pay plan directly linked to company performance measures and targets.
• 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.
• 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 lots of benefits to help you take care of you and your family’s health and wellbeing, and your finances – from annual health MOTs and access to physiotherapy and counselling, to Cycle to Work schemes, shopping vouchers and life assurance.

Find out more about our benefits and perks (Please note different T&Cs apply if on secondment)

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 help from 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.

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.

If you’re looking for a sustainable and successful career where you can make a daily difference to millions of people’s lives while helping to protect the world of water for future generations, we’ll be here to support you every step of the way. Together, we can build a better future for our customers, our region, and our planet.

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.