Join Us as a Senior Mechanical Engineer Shape the Future of Water and Wastewater Infrastructure

Are you ready to make a meaningful, long-term impact on communities and the environment?

As a Senior Mechanical Engineer at Thames Water, youll play a vital role in transforming and modernising our sewage treatment works. Your technical expertise will help deliver innovative, resilient, and cost-effective engineering solutions that protect public health, safeguard ecosystems, and enable sustainable growth across our region.

In this influential position, youll work closely with contractors and multidisciplinary teams to ensure our designs meet the highest standards of technical quality and compliance. Youll be empowered to lead the assurance of complex engineering projectsbringing excellence to every stage while contributing to a cleaner, greener future for millions of customers.

What youll be doing as a Senior Mechanical Engineer:

• Collaborating with a wide range of internal stakeholdersincluding engineers, asset managers, and operations teamsto develop fit-for-purpose, resilient engineering solutions that balance innovation, value for money, and long-term performance.
• Providing robust assurance and technical oversight of consultants and contractors delivering large and complex capital projects.
• Ensuring compliance with legislation, regulations, and Thames Water standards so that all solutions are delivered safely and meet the technical and environmental requirements set out in the Project Brief.
• Playing a key role in supporting Thames Waters Triple Zero Health, Safety and Wellbeing vision. By conducting audits and reviewing Risk Assessments, Method Statements and Safe Systems of Work, you will help drive our commitment to zero incidents, zero harm, and zero compromise.
• Identifying, managing, and escalating delivery risks and opportunities throughout the project lifecycle.
• Supporting the production of Project Briefs and providing timely and accurate responses to RFIs.

Location - This role is hybrid, based at Clearwater Court, with travel to Oxford Sewage Treatment Works.

Youll typically spend 2 to 3 days per week on site to support design reviews, assurance activities, and project delivery.

36 hours per week, Monday to Friday.

What you should bring to the role:

To thrive in this role, the essential criteria youll need are:

• A degree in Mechanical Engineering (or equivalent).
• Experience working in a design and construction-related engineering role.
• Awareness of applying Construction (Design and Management) Regulations 2015 (CDM 2015).

Nice-to-haves that would make you stand out:

• Strong technical knowledge of pumping systems and mechanical package plant.
• Experience collaborating across multiple engineering disciplines to deliver fully integrated, operational solutions.

Whats in it for you?

• Competitive salary from £55,000 to £65,000 per annum, depending on skills and experience.
• 26 days holiday per year, increasing to 30 with the length of service. (Plus bank holidays).
• Generous Pension Scheme through AON.
• Access to lots of benefits to help you take care of you and your familys 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.
• Performance-related pay plan directly linked to company performance measures and targets.

Who are we?

Were the UKs 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. Its a big job and weve 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.

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, youll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

If youre looking for a sustainable and successful career where you can make a daily difference to millions of peoples lives while helping to protect the world of water for future generations, well 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.

Were committed to being a great, diverse, and inclusive place to work. We welcome applications from everyone and want to ensure you feel supported throughout therecruitment process. If you need any adjustments, whether thats extra time, accessible formats, or anything else just let us know, were here tohelp and support.

When a crisis happens, we all rally around to support our customers. As part of Team Thames, youll 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. Its 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.