Senior Data Analyst

At Thames Water, we make a daily difference to 15 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. Join us as a Senior Data Analyst and help us deliver life’s essential service through powerful insights and data-driven decisions—especially if you’ve worked 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 be responsible for turning complex data into clear, actionable insights that support operational decisions across Customer Service, Financial Customer Care, and Wholesale units. You’ll work closely with stakeholders to understand their needs and deliver impactful reporting and analysis.

• Collect, organise, and visualise data using ETL (Extract, Transform, and Load) processes.
• Deliver daily reporting and interpret metrics into meaningful insights.
• Support data migration from legacy systems to the Azure Cloud.
• Build consolidated reports and dashboards using Power BI and SQL.
• Conduct scenario modelling and risk analysis.
• Collaborate across departments to improve data capture and reporting.
• Influence operational decisions through expert advice and insight.

Base Location: Hybrid/Swindon

Working pattern: Full time – 36 hours

What you should bring to the role

• Strong SQL & Databricks Skills: Must have advanced expertise in SQL, including procedural SQL, and proven hands-on experience working within the Databricks environment.
• Exceptional Data Visualisation: Proven track record of building compelling reports and dashboards using Power BI, translating complex data into clear, actionable insights.
• Insight-Driven Influence: Ability to influence operational and strategic change by leveraging data-driven insights, with examples of impact in previous roles.
• Stakeholder Engagement: Excellent relationship management and communication skills to engage with a variety of stakeholders and deliver high-level messaging with commercial impact.
• Technical Proficiency: Strong working knowledge of Azure, Azure Data Factory, and PL-SQL.
• Clear Presentation: Ability to prepare and present complex data in a clear, compelling manner tailored to diverse audiences.
• Python programming proficiency (desirable)

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.
• 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 fast-tracked career opportunities, flexible working arrangements and excellent benefits.
Whether you’re interested in a role in one of our call centres or science labs, we’re looking for people like you with real passion and a burning desire to make things better.

So, 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.

Our overarching aim is to ensure that Thames Water is great, diverse, and inclusive place to work. We welcome applications from everyone and offer extra support for those who need it throughout the recruitment process. Our aim is to remove any real or perceived barriers to success, so if you need assistance, 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.