Mechanical Project Engineer: Water Systems + Car Allowance

Mechanical Project Engineer
(Internal title: Project Engineer – Capital Maintenance Project Team)
This role is ideal for a collaborative, self-motivated professional who enjoys seeing engineering projects through from concept to completion. You’ll play a key role in delivering Thames Water’s capital programme by managing mechanical engineering projects end‑to‑end across our operational sites and estate.

You don’t need to meet every requirement to apply—if you’re excited by the work we do and believe you can make a positive impact, we encourage you to apply.

What you will be doing as a Mechanical Project Engineer
In this role, you will:

• Lead and deliver a portfolio of mechanical projects, typically valued between £100,000 and £1 million.
• Manage several live projects at once, while also planning and tendering upcoming work.
• Work closely with operations teams to develop innovative, cost‑effective solutions that support efficient, reliable water services.
• Coordinate with colleagues, contractors and delivery partners to scope, define and cost project solutions.
• Promote and uphold our zero‑compromise approach to health, safety and wellbeing, including conducting monthly audits.
• Ensure construction activity follows Thames Water policies, wider industry standards and CDM regulations.
• Collaboratively manage delivery partners to keep projects on track and within agreed timeframes.
• Maintain compliance with Asset Standards, British & International Standards and professional codes of conduct.
• Provide accurate financial forecasting and reporting (VOWD).
• Produce and review key project documentation, including project programmes, risk assessments and method statements.
• Oversee commissioning, training and final handover to operational teams.
• Ensure all completion documentation—test certificates, O&M manuals, H&S files, as‑built drawings—is provided and accurate.
• manuals, health and safety files, and as-constructed drawings.

Location – Your base location will be Bracknell. This role will require travelling to Basingstoke, Fleet and Farnborough up to 5 days a week.
You will be required to have a full driving licence. You will receive a car allowance, which is paid monthly.
Working Hours – Monday to Friday, 36 hours per week.

What you should bring to the role
We welcome applicants with varied backgrounds. You’ll be a great fit if you have:

• Experience or a background in Mechanical Engineering.
• Formal mechanical engineering qualifications such as BTEC/HND or equivalent, or relevant industry experience.
• Knowledge of Clean Water Processing and/or Wastewater Treatment (desirable but not essential).
• Confidence coordinating multiple stakeholders, including internal colleagues, site teams and contractors.
• The ability to work independently, show initiative and deliver high‑quality work.
• An understanding of health and safety standards, especially relating to construction and CDM (training will be provided).
• Experience in Construction or Engineering Project Management.

If you don’t tick every box, please don’t rule yourself out—we value potential, transferable skills and a willingness to learn.

What’s in it for you?

• Offering up to £60,000 per annum, depending on experience and skills, plus £4,500 car allowance
• 26 days holiday per year, increasing to 30 with the length of service. (plus bank holidays)
• Contributory pension – Defined Contribution - Maximum of 12% -2x employee contribution.
• Personal Medical Assessments – open to all once a year.
• Wider benefits scheme, including our benefits hub, which is packed full of offers and information to save you money and support your well-being.

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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