Senior Technical Assurance Engineer

Thames Water; England; Hybrid; GBP 50,000 - 65,000; Full time

Job summary

A major UK infrastructure company is seeking a Senior Technical Assurance Engineer to lead initiatives in wastewater treatment. Responsibilities include collaborating with internal teams to develop operational solutions, ensuring compliance with regulations, and conducting audits to maintain safety standards. The role demands a degree in engineering and relevant experience in design and construction. Offering a competitive salary of £50,000 to £65,000 along with comprehensive benefits including flexible working arrangements and a contributory pension scheme.

Benefits

26 days holiday increasing to 30

Contributory pension scheme

Performance-based pay plan

Personal medical assessments

Qualifications

• Educated to a degree level in civil, electrical or mechanical engineering.
• Experience in design and construction-related roles.
• Familiarity with Construction (Design and Management) Regulations 2015.

Responsibilities

• Collaborate with internal stakeholders to develop solutions.
• Assure compliance with regulations and standards.
• Conduct audits and manage delivery risks.

Skills

Civil engineering expertise

Collaboration and teamwork

Risk management

Technical compliance

Education

Degree in civil, electrical or mechanical engineering

Job description

Senior Technical Assurance Engineer

Be part of something that truly matters. Thames Water is on a mission to transform and modernise our wastewater infrastructure — and we’re looking for a Senior Technical Assurance Engineer with a strong engineering background to lead the way on some of our most ambitious major projects.

This isn’t just a technical role. It’s an opportunity to shape the future of wastewater treatment for millions of people, balancing cutting‑edge design, sustainability, value for money, and long‑term resilience.

What you’ll be doing as a Senior Technical 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 supporting the delivery of often large, complex capital projects.
• You can support preliminary, outline and detailed design with our delivery partners.
• 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 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.
• Train and mentor team members in treatment processes, procedures, and compliance requirements to ensure effective and efficient treatment.

This role will be based on a hybrid basis at Clearwater Court, Reading. As part of this role, you are required to be on‑site and in the office three days a week, as the business necessitates. 36 hours a week, Monday to Friday.

What you should bring to the role

• Be educated to a degree level in a civil, electrical or mechanical engineering discipline with relevant or transferable work experience.
• Background in working in a design and construction‑related role.
• Awareness of applying the Construction (Design and Management) Regulations 2015 (CDM 2015).
• You must 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 between £50,000 to £65,000 per annum, depending on the skills and experience of successful candidates.
• 26 days holiday per year, increasing to 30 with the length of service (plus bank holidays).
• Contributory pension – defined contribution – maximum of 12% – 2× employee contribution.
• Personal medical assessments – open to all once a year.
• Performance‑related pay plan directly linked to company performance measures and targets.
• 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 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.