Job title Senior Mechanical Assurance Engineer Ref 41756 Division Asset Operations & Capital Delivery Location Hybrid - Oxford STW - OX4 4YU Contract type Permanent Full/Part-time Full-time Salary Competitive salary from £55,000 to £65,000 per annum, depending on skills and experience. Job grade B Closing date 05/08/2025

As a Senior Mechanical Assurance Engineer, you play a vital role in our mission to modernise and enhance Thames Water’s sewage treatment works. Your expertise is essential in delivering innovative, cost-effective, and resilient solutions that protect our communities, safeguard the environment, and preserve vital ecosystems. You’ll also work closely with our contractors to ensure that all designs align with our technical requirements and quality standards.

What you’ll be doing as a Senior Mechanical Assurance Engineer

• You'll have the exciting opportunity to collaborate with diverse internal stakeholders, including engineers, asset management, and operations. This collaboration will shape fit-for-purpose solutions and positively influence the balance of innovation, value for money, and resilience.
• This role also requires extensive collaboration with, and assurance of, consultants and contractors who support the delivery of often large and complex capital projects.
• Ensuring compliance with legislation and regulations, as well as our policies, standards, and expectations, so that solutions are delivered safely and meet the technical and environmental requirements of the Project Brief.
• Your role will be crucial in actively supporting Thames Water’s ‘triple zero’ Health, Safety, and well-being vision. By conducting audits and reviewing Risk Assessments, Method Statements, and Safe Systems of Work, you'll contribute to our goal of zero incidents, zero harm, and zero compromise.
• Identifying and supporting the management of delivery risks and opportunities.
• Contributing to the creation of Project Briefs and responding to RFIs.

Hybrid – Oxford Sewage Treatment Works. The successful candidate will be required to be on-site two to three days a week.

36 hours a week, Monday to Friday.

What you should bring to the role

• Be educated to a degree level in Mechanical Engineering.
• Background in working in a design and construction-related role.
• Awareness of applying the Construction (Design and Management) Regulations 2015. (CDM 2015)
• Have technical knowledge and expertise within your discipline and the ability to work with various engineering disciplines to create fully operational solutions.

What’s 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).
• 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.

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 fast-tracked career opportunities, flexible working arrangements and excellent benefits.

Whether you’re interested in a role in one of our call centres or science labs, we’re looking for people like you with real passion and a burning desire to make things better.

So, 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's 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.

Our overarching aim is to ensure that Thames Water is a great, diverse, and inclusive place to work. We welcome applications from everyone and offer extra support for those who need it throughout the recruitment process . Our aim is to remove any real or perceived barriers to success, so if you need assistance, 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 advertisement earlier than the advertised date. We encourage you to apply as soon as possible to avoid disappointment.