Senior Data Analyst

At Thames Water, we make a daily difference to 16 million customers by supplying 2.6 billion litres of water through 32,000 km of pipes. As the UK’s largest water company, we’re building resilience for tomorrow while fixing today’s challenges.

We are seeking a Senior Data Analyst with advanced technical expertise to deliver powerful insights and data-driven decisions, particularly in a regulated, customer-facing environment where data drives critical service delivery.

What you’ll be doing as a Senior Data Analyst

As a Senior Data Analyst, you’ll transform complex data into clear, actionable insight that supports operational decisions across Customer Service, Financial Customer Care and Wholesale. You will work closely with stakeholders to understand their needs and deliver impactful reporting, modelling and analytics.

Your responsibilities will include:

• Collecting, organising and visualising data using ETL (Extract, Transform and Load) processes.
• Delivering daily reporting and translating metrics into meaningful insights.
• Supporting data migration from legacy systems to the Azure Cloud.
• Building consolidated reports and dashboards using Power BI and advanced SQL.
• Conducting scenario modelling and risk analysis to guide business strategies.
• Collaborating with departments to improve data capture and reporting quality.
• Influencing operational decisions through expert data analysis and clear recommendations

Base Location: Hybrid/Swindon

Working pattern: Full time – 36 hours

What you should bring to the role

Essential Requirements – Applications will only be considered if these are met:

• Advanced SQL expertise (including procedural SQL) with a proven track record of working in complex, large‑scale datasets.
• Extensive hands-on experience in Databricks, including building, optimising and maintaining data pipelines.
• Expert Power BI skills, with demonstrable experience building dashboards and reports that deliver clear, actionable insights.

Additional Skills & Experience

• Ability to influence operational and strategic change through data-driven insight, with strong examples of impact.
• Excellent stakeholder engagement, communication and relationship‑building skills.
  Strong working knowledge of Azure, Azure Data Factory and PL‑SQL.
• Ability to present complex data in clear and compelling formats tailored to diverse audiences
• Python programming proficiency. (desirable)

All applicants must provide a covering letter that explains their experience of relevant projects that demonstrate their technical expertise and the impact of their work. Applications submitted without this covering letter will not be considered.

What’s in it for you?

• Competitive salary: £53,385 to £60,000 per annum, dependent on experience.
• 26 days holiday per year (increasing to 30 with service) plus bank holidays.
• Generous pension scheme through AON.
• Performance-related pay plan directly linked to company performance measures and targets
• Access to health MOTs, physiotherapy, counselling, Cycle to Work scheme, shopping vouchers, and life assurance.

Find out more about our benefits and perks

Who are we?

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.