Data Modeller

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. This role is ideal for someone curious about how complex systems work, who enjoys exploring how data and models interact, and is motivated by solving real-world environmental challenges. As a Data Modeller, you'll play a vital role in safeguarding future water supplies by using statistical and computational models to analyse, and inform strategic water resource decisions across the Thames Water patch. You'll be part of a team that's making big calls from drought planning to long-term supply demand strategies and your insights will help shape how we deliver great water. What you'll be doing as a Data Modeller

• 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.
• Responsible for the provision of 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.

To thrive in this role, the essential criteria are:

• 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 that would be a great fit for our team

• 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.

Salary: This position pays a salary between £46,000 - £55,000 per annum, depending on experience., * Competitive salary of between £46,000 and £55,000 per annum, depending on experience.

• Annual Leave - 26 days holiday per year, increasing to 30 with the 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 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.

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. 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, you'll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits. If you're looking for a sustainable and successful career where you can make a daily difference to millions of people's lives while helping to protect the world of water for future generations, we'll 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. 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, we're here to help and support. When a crisis happens, we all rally around to support our customers. As part of Team Thames, you'll 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. It's 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.