Location
Croydon, London, CR0 8YY

Hours
9 am to 5 pm Monday to Friday, 36 hours per week, with possible participation in a technical standby rota in future (1 in 8 weeks)

Salary
£39,770 to £45,000 per annum, depending on skills and experience

About the Role
If you enjoy working in a fast-paced operational environment and using data and engineering insight to solve real system challenges, this System Optimisation Engineer role could be a great next step for you. You’ll be working across a large hydraulic area, helping to keep the clean water network running smoothly while balancing customer service, leakage, and regulatory targets. This is a role where you can really make an impact, working closely with different teams and getting involved in both day-to-day operations and longer-term improvements.
- Monitoring and resolving low-pressure issues, customer complaints and network risks.
- Supporting and leading technical input into engineering and customer projects.
- Acting as a technical lead during unplanned or emergency events.
- Writing and reviewing risk assessments for work impacting the water network.
- Working closely with leakage teams and other stakeholders to optimise system performance.
- Supporting long-term planning around resilience, water quality and system stability.
- Helping develop operating strategies to maintain a calm and compliant network.
- Reviewing and approving new connections and development requests.
This role offers the opportunity to join a high-profile team where your work directly impacts customers and network performance, while providing exposure to a wide range of stakeholders and projects across the business.
Thames Water is the UK’s largest water and wastewater company, serving over 16 million customers. We are committed to building a better future for our customers, communities, people, and the planet. Working here means being part of a diverse and rewarding environment with fast-tracked career opportunities, flexible working arrangements, and excellent benefits.
We welcome applications from everyone and offer support throughout the recruitment process to remove any barriers to success. Join us and help build a better future for our customers, region, and planet.

Experience
- Experience working within a regulated environment, ideally in water or utilities.
- Strong understanding of hydraulic systems and water network operations.
- Proven analytical and problem-solving skills with the ability to interpret operational data.

About you
- Strong communication skills and confidence working with multiple stakeholders.
- Proactive mindset with a willingness to learn and develop.
- Ability to act as a technical lead during unplanned or emergency events.

Qualifications
- A degree in Engineering or a relevant technical discipline is desirable.