Principal Process Specialist IED - Isleworth, Greater London

Company: Thames Water

Location: Isleworth

Posted: May 15th, 2026

Principal Process Specialist IED - Isleworth, Greater London, TW7 7LP

Contract: PermanentSalary: Offering a salary up to 52,100 per annum, depending on skills and experience, plus a car allowance on top.Do you want to play a leading role in shaping Thames Waters environmental compliance under the new Industrial Emissions Directive (IED)?

Were looking for a Principal Process Specialist to lead the way in sludge treatment, anaerobic digestion, and odour management supporting our Operations teams to meet evolving regulatory requirements and deliver real environmental improvements.
This is a dynamic, hands-on role where youll combine technical expertise with innovation, using data analysis, fault finding, pollution mitigation, and process optimisation to drive compliance and operational excellence across a range of sites.
Working Hours: Hybrid - 36 Hours per week (Mon Fri)

This role covers the following locations (travel required as part of the role, Full UK driving licence is essential):
Beckton (STW) - IG11 0AD
Beddington (STW) - CR0 4TH
Crossness (STW) - SE2 9AQ
Deephams (STW) - N9 0BA
Mogden (STW) - TW7 7LW

What will you be doing as a Principal Process Specialist IED:
Technical ExpertiseCommunication & LeadershipTrainingWhat should you bring to the role?
Essential:Desirable: Whats in it for you?Find out more about our benefits and perks (Please note different T&Cs apply if on secondment)

Who are we?
Were the UKs 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. Its a big job and weve 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, youll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

If youre looking for a sustainable and successful career where you can make a daily difference to millions of peoples lives while helping to protect the world of water for future generations, well 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.

Were 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 thats extra time, accessible formats, or anything else just let us know, were here to help and support.

When a crisis happens, we all rally around to support our customers. As part of Team Thames, youll 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. Its 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.
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