Senior Instrumentation, Control and Automation Engineer

Overview

Job title Senior Instrumentation, Control and Automation Engineer  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 11/02/2026

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 Instrumentation, Control and Automation Engineer (ICA) to join our Major Projects team, where you’ll play a central role in delivering some of the most technically complex and high‑profile schemes within the UK’s largest potable water and wastewater treatment investment programmes.

With project values ranging from £30 million to over £120 million
, and spanning the full lifecycle from feasibility through to commissioning and handover, this is a rare opportunity to influence national infrastructure—protecting public health, enhancing the environment, and supporting sustainable growth for millions of customers.

• Leading ICA technical assurance activities across major capital projects to ensure delivery is safe, efficient, and fully aligned to time, cost, and quality expectations.
• Championing a strong health, safety, and wellbeing culture, actively supporting Thames Water’s ‘Triple Zero’ vision of zero incidents, zero harm and zero compromise.
• Collaborating closely with contractors, consultants, and multi‑disciplinary teams to ensure designs meet the required technical, environmental, and regulatory standards.
• Ensuring solutions fully meet the Project Brief, respond to stakeholder needs, and deliver the best Whole Life Cost and operational value.

This role is hybrid, based at Clearwater Court
, with travel to project sites as required. You’ll 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.

• A degree in Electrical, Instrumentation, Control & Automation engineering—or equivalent experience gained in a relevant engineering role within the water or wastewater sector. We also welcome applicants from other industries with strong transferable technical skills.
• Proven leadership in fostering a positive Health, Safety and Wellbeing culture.
• Significant experience in a design or design‑related engineering role.
• Strong technical knowledge of asset standards, deep expertise within your ICA discipline, and experience collaborating across multiple engineering disciplines.
• Experience contributing to Stage Gate processes and ensuring robust technical governance.
• Strong commercial awareness and a practical understanding of engineering contracts.
• A personal commitment to demonstrating behaviours aligned to Thames Water’s Values
  .
• Resilience, determination under pressure, and the drive to deliver projects safely, on time, on budget, and to the highest technical standard.

• 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,…