Construction Assurance Engineer

Location: Hampton

We have an exciting opportunity for you to make a meaningful impact on the development and modernisation of our Water Treatment Works in London and the surrounding areas. In this role, you’ll play an essential part in ensuring the continued delivery of vital services while contributing to the protection of our environment.

If you’re passionate about improving communities, supporting sustainability, and working collaboratively, we’d love to hear from you.

Apply now and join a supportive, purpose‑driven team committed to safeguarding our planet for future generations.

What you’ll be doing as a Construction Assurance Engineer

Supporting design and delivery reviews, helping to identify risks and issues early, and working with a range of stakeholders to find practical, collaborative solutions.
Carrying out health and safety audits and promoting a safe working culture where everyone feels supported and listened to.
Focusing on the construction phase of wastewater projects—assessing progress, reporting proactively, and stepping in where needed to keep projects on track. You’ll also ensure any non‑conformance is identified, addressed, and resolved.
Managing, identifying, and resolving snags while working closely with Operators and contractors after takeover to support defect resolution, aftercare processes, and performance testing.
Monitoring, agreeing, and approving Takeover tests alongside the project team.
Ensuring project documentation meets required standards and that takeover information is complete and fully approved.
Working as an active, valued member of one or more project teams in partnership with our contractors, contributing your voice, perspective and expertise.

Hybrid – Hampton Coal Wharf

As part of this role, you must be on site 3-4 days a week, 36 hours a week, Monday to Friday.

The successful candidate must drive and have a car - this role comes with a car allowance of £4,500 a year.

What you should bring to the role

We welcome applicants from a range of backgrounds and experiences. If you don’t meet every requirement but feel you’d be a great fit, we encourage you to apply.
An HNC or above in an engineering‑related subject, or experience from a similar role.
Knowledge of construction‑site health and safety. If you don’t yet have an SMSTS qualification, we can support you in gaining it.
Understanding of design, construction, and operational processes
Experience in project delivery and integration within construction.
Confidence in communicating with various stakeholders and working as part of a collaborative team.

What’s in it for you?

You’ll join a supportive, multi‑disciplinary Engineering Project Delivery Team working on major capital investment projects across London for the next decade.
This is a fantastic opportunity to grow your career, develop new skills, and help shape essential services that make a real difference to millions of people. We’re committed to creating an environment where everyone—regardless of gender, background, or experience—can thrive, feel valued, and progress.
Competitive salary from £40,000 to £60,000 per annum.
Car allowance of £4,500 per annum.
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 wellbeing.

Find out more about our benefits and perks

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…