Generator Field Service Engineer

Allscreens Nationwide Ltd; Enfield; On-site; GBP 44,000 - 65,000; Full time

Benefits offered by this job

Pension

Holidays

Van on duty

Overtime

Job summary

Thames Water is hiring a Generator Field Service Engineer to maintain and optimise CHP spark-ignition biogas engines across Thames Valley, Home Counties and London areas. The role requires hands-on diagnostics, parts planning, and safety-first work practices. 45-hour weeks, standby and overtime options, and a company van on duty.

Base location could be any Thames Water site within the region. The ideal candidate will have deep knowledge of internal combustion engines, strong diagnostic skills,

Qualifications

• In-depth knowledge of operation and maintenance of internal combustion engines.
• Ability to diagnose engine, generator and related systems thoroughly and methodically.
• Ability to operate/optimise assets using engine/generator controls (ComAp, DIA.NE, TEM Evo).
• Ability to work to a high level of quality, both independently and in a team.

Responsibilities

• Carry out planned and unplanned maintenance of CHP Spark Ignition generators across a region.
• Coordinate with support staff and suppliers to ensure safe, timely work within budget.
• Complete service records and reports accurately and promptly.
• Identify parts, lubricants and waste for orders.
• Demonstrate a strong commitment to health, safety and wellbeing.

Skills

Internal combustion engines

Diagnostics

Engine/generator controls

Teamwork

Driving licence

Education

NVQ/C&G engine qualification

Engine manufacturer qualification

Electrical qualification (advantage)

Tools

ComAp

DIA.NE

TEM Evo

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.

Generator Field Service Engineer

Company: Thames Water Salary: £44,000 - £65,000 Hours: Full-time Location: Enfield, N9 0BA Job type: Permanent Posting date: 20 Aug 2026 Closing date: 2 Sept 2026

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, Home Counties and the London 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.

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.

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.

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.

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About Disability Confident

Disability Confident is a government scheme. It encourages employers to recruit and retain disabled people and those with long term health conditions.