Senior Technical Assurance Engineer

Thames Water Utilities Limited; Reading; Hybrid; GBP 55,000 - 65,000; Full time

Job summary

A leading UK water provider is looking for a Senior Technical Assurance Engineer to join their Major Projects team. This pivotal role requires expertise in delivering major water infrastructure projects, along with a degree in Electrical Instrumentation or similar. Responsibilities include leading technical assurance, fostering a culture of health and safety, and collaborating with external partners. The role offers a competitive salary up to £65,000, excellent benefits, and the opportunity for hybrid work arrangements in Reading.

Benefits

26 days holiday per year

Contributory pension up to 12%

Performance-related pay plan

Personal medical assessments

Wider benefits scheme

Qualifications

• Degree in Electrical Instrumentation, Control & Automation or equivalent experience in the water/wastewater sector.
• Significant experience in a design or related role.
• Detailed technical knowledge and expertise within engineering disciplines.

Responsibilities

• Lead technical assurance across capital projects.
• Champion health, safety, and wellbeing culture.
• Collaborate with contractors for compliance with standards.

Skills

Leadership in Health, Safety and Wellbeing

Technical knowledge in asset standards

Commercial awareness

Resilience and motivation under pressure

Education

Degree in Electrical Instrumentation, Control & Automation

Job description

Job title Senior Technical Assurance Engineer Ref 42891 Division Asset Operations & Capital Delivery Location Hybrid - Clearwater Court - RG1 8DB Contract type Permanent Full/Part-time Full-time or part-time Salary Competitive salary from £55,000 to £65,000 per annum, depending on skills and experience Job grade B Closing date 20/01/2026

Join Thames Water’s Major Projects Team – Shape the Future of Water and Wastewater Infrastructure.

Are you ready to take on one of the most exciting engineering challenges in the UK water sector?

We’re looking for a Senior Technical Assurance ICA Engineer to join our Major Projects team, where you’ll play a pivotal role in delivering some of the most technically complex and high‑profile projects in the UK’s largest potable water and wastewater treatment investment programmes.

With project values ranging from £30 million to over £120 million, and covering the full lifecycle from feasibility to handover, this is your opportunity to make a real and lasting impact—on our customers, our environment, and the future of water infrastructure.

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

• Lead technical assurance across capital projects, ensuring delivery to time, cost, and quality.
• Champion a strong health, safety, and wellbeing culture, supporting Thames Water’s ‘Triple Zero’ vision.
• Collaborate with contractors and consultants to ensure compliance with our technical, environmental, and regulatory standards.
• Ensure solutions meet the Project Brief, address stakeholder needs and deliver best Whole Life Cost.

Hybrid – Clearwater Court with travel to other sites. The successful candidate will be required to be on‑site for 2 to 3 days a week.

36 hours a week, Monday to Friday, we are open to part‑time and full‑time hours.

What you should bring to the role

To thrive in this role, the essential criteria you’ll need is:

• Hold a degree in Electrical Instrumentation, Control & Automation , or possess equivalent experience in a relevant role within the water or wastewater sector. We also welcome candidates with transferable skills from other industries who bring strong technical expertise and a passion for engineering excellence.
• Be a leader in promoting a culture of Health, Safety and wellbeing.
• Have significant experience working in a design or related role.
• Have detailed technical knowledge, of asset standards, and expertise within your discipline plus experience of working across engineering disciplines.
• Active input into the Stage Gate and Technical Governance of projects.
• Be commercially aware with a good practical understanding of engineering contracts.
• Have a desire to adopt and demonstrate behaviours aligned with Thames Water’s Values.
• Be resilient, tenacious under pressure and highly motivated to successfully deliver projects safely to time, cost and quality.

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.
• 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 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 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.