Overview
Thames Water is offering an exciting opportunity to join our Water Resources team as a Data Modeller, where you’ll help shape how London’s water is managed over the next 100 years. The role is ideal for someone curious about how complex systems work, who enjoys exploring the interaction between data and models, and is motivated by solving real‑world environmental challenges.
Key Responsibilities
* Develop and enhance our Python‑ and VBA‑based water resource system models.
* Undertake water resource system analysis and provide expert insight on solutions to support the maintenance and enhancement of our water supply capability.
* Translate complex technical outputs into clear, actionable insights for non‑technical audiences.
* Provide water resources data and information, including metrics of drought risk, deployable output, climate change impact, outage, and headroom outputs to support operations, regulatory reporting, and long‑term planning.
* Support delivery of key inputs to our Water Resources Management Plan and Drought Plan, including liaising with external parties, such as the Environment Agency, on modelling and analysis as required.
* Collaborate across teams to share expertise and strengthen technical resilience.
* Contribute to the development of supply–demand assessment methodologies, including influencing those required by the Water Resources Southeast (WRSE) regional planning group.
Location & Salary
Location: Hybrid from Clearwater Court, Reading RG1 8DB
Salary: £46,000 – £55,000 per annum, depending on experience.
Essential Criteria
* Strong programming and data visualisation skills in Python and R.
* Experience developing and maintaining modelling codebases using robust version control.
* Demonstrated curiosity and systems thinking, with a desire to understand how complex water supply systems operate and respond to change.
* Strong analytical and problem‑solving abilities, with a critical approach to interpreting data and model results.
* Excellent communication and collaboration skills, able to translate technical findings into clear insights for diverse stakeholders.
Extra Qualities
* Experience programming in VBA.
* Proven water resources modelling experience preferably using Pywr and Aquator.
* Proven experience in developing, maintaining, and communicating model outputs for operational and strategic decision‑making.
* Proven modelling experience in hydrological and groundwater models.
* Sound understanding of water resources regulation and planning frameworks, including how regulatory requirements influence modelling and investment decisions.
* Effective project management and organisational skills, delivering high‑quality modelling and analysis work to agreed timelines and standards.
Benefits
* Competitive salary of £46,000 – £55,000 per annum, depending on experience.
* Annual leave: 26 days per year, increasing to 30 with length of service (plus bank holidays).
* Performance‑related pay plan directly linked to company performance measures and targets.
* Generous pension scheme through AON.
* Access to a wide range of benefits, including annual health MOTs, physiotherapy and counselling, Cycle to Work schemes, shopping vouchers, and life assurance.
About Us
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 aim to build a better future for all, helping our customers, communities, people, and the planet to thrive.
Diversity & Inclusion
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.
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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