Systems Optimisation Engineer; Water

Hybrid
- Ashford Common (WTW) - TW15 1RU
, Hybrid
- Deephams (STW) - N9 0BA

Job title Systems Optimisation Engineer (Water)  Division Asset Operations & Capital Delivery Location Hybrid
- Ashford Common (WTW) - TW15 1RU
, Hybrid
- Deephams (STW) - N9 0BA
Contract type Permanent Full/Part-time Full-time Salary This role will be paid from £39,770 to £45,000 per annum, depending on skills and experience. Job grade B Closing date 23/10/2026

This is an exciting opportunity to work in a busy operational environment, within a high-profile team where contacts are made with multiple stakeholders across the business.

The System Optimisation Engineer is responsible for a geographical & hydraulic system area of the Thames Water potable water system, typically serving hundreds of thousands of properties, who is tasked to use their technical expertise of hydraulic system operations towards achieving key operational and regulatory targets.

• Leading the technical operational input into engineering and customer-led projects.
• Be the technical system operations lead on unplanned emergency events with a view to mitigating against adverse effects to the customer, Interruptions to supply, water quality, and brand image.
• Write and assess risk assessments for the work impacting the clean water hydraulic system.
• Support monitoring of pressure-managed areas and management of information.
• Formulating operating strategies in conjunction with the operational control centre.
• Design and update line schematics of water pressure zones and the hydraulic systems, to help management and investigation of issues.
• Assess and approve all new connections or development requests coming from the customer.

London – Deephams (N9 0BA
) & Ashford Common (TW15 1RU
), however, additional travel to other sites across London may be required.

36 Hours per week (Mon – Fri) with the inclusion on a standby rota for which you will receive additional payment.

• Hold industry-relevant experience and in-depth knowledge of hydraulic principles.
• Have a thorough understanding of the Water Industries regulatory measures relating to customer satisfaction, leakage, water quality, customer low pressures and interruptions.
• Having strong communication and leadership skills is required when negotiating or liaising with different stakeholders in this role.
• Have good analytical, problem-solving, and negotiating skills and an extreme willingness to learn and work hard to drive their career within Thames Water.

• Ideally, be a degree-educated graduate in a suitable technical discipline like Engineering or equivalent.

• This role will be paid from £39,770 to £45,000 per annum, depending on skills and experience.
• Annual Leave:26 days holiday per year, increasing to 30 with length of service (plus bank holidays)
• Generous Pension Scheme through AON.
• Pension:
  Maximum of 12% = 2x employee contribution.
• Access to lots of benefits to help you take care of you and your family’s health and wellbeing, and your finances – from annual health MOTs and access to physiotherapy and counselling, to Cycle to Work schemes, shopping vouchers and life assurance.

Find out more about our benefits and perks ( Please note different T&Cs apply if on secondment)

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…