Data Scientist (Tesco Mobile)

At Tesco Mobile, we believe data has the power to make everyday experiences simpler, smarter, and more meaningful for our customers. We’re looking for a Data Scientist who’s curious, collaborative, and ready to make a real impact from day one.

If you enjoy solving business challenges with data—and want to grow your skills in a supportive, inclusive environment—this could be your next opportunity.

This is a hands-on position where your analytical thinking will directly shape business decisions and improve customer experiences. From personalised communications to smarter stock management, your work will help us deliver better outcomes for millions of customers.

You’ll tackle a variety of challenges, such as:

• Enhancing marketing effectiveness
• Maximising customer lifetime value
• Reducing customer churn
• Supporting smarter stock and demand decisions

Whatever you’re working on, you’ll keep our customers at the heart of every decision.

This role can be based in Welwyn Garden City, Slough, or London, with occasional travel to other sites.

• Join your team in person for a fortnightly meeting (usually in Slough or London)
• Enjoy hybrid working, with time spent both in the office and at home
  

• Build, validate, and optimise models and mange basic models and data pipelines
• Contribute across the data science lifecycle, including documentation and security best practices
• Use statistical analysis to generate insights, improve customer experience and drive business improvements
• Collaborate with your team to solve problems and share knowledge
• Continuously identify ways to improve your work and develop your skills

We’re looking for someone who’s eager to learn, enjoys working with others, and can turn data into clear, meaningful stories.

Key skills and experience:

• Experience with Python, SQL, and scikit-learn, plus basic PySpark knowledge
• Understanding of database systems and data handling
• Familiarity with full machine learning lifecycles (deployment experience is a bonus)
• Strong coding practices, including testing and optimisation
• Ability to turn ambiguous questions into structured, solvable problems (with support)
• Confident communicator—able to explain ideas clearly to non-technical audiences
• Strong listening skills and a collaborative mindset
• PhD, Masters or Bachelors Degree within a Data Science field or similar

You’ll thrive if you also:

• Take initiative in your learning and development
• Enjoy giving and receiving constructive feedback
• Are curious about improving models, processes, and outcomes
  

We’re all about the little helps. That’s why we make sure our Tesco colleague benefits package takes care of you – both in and out of work. Click Here to find out more!

• Annual bonus scheme of up to 20% of base salary
• Holiday starting at 25 days plus a personal day (plus Bank holidays)
• Private medical insurance
• 26 weeks maternity and adoption leave (12 months service required at the qualifying date) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave

The above information is a shortened summary, refer to our policies for full details 

A 50-50 joint venture between Tesco and VMO2 that was established back in 2003, Tesco Mobile has gone from strength to strength as we’ve launched into new services and markets. With more than 5 million customers, we’re the largest mobile virtual network operator in the UK. We’re proud to have an inclusive culture that’s uniquely Tesco Mobile, with a strong sense of community, plus all the benefits of working for one of the shareholders.

We care for human connection and we keep our customers at the heart of everything we do, which is why we’ve embraced the Agile way of working. Agile is more than just a methodology – it’s a liberating journey that puts customers and purpose first. It empowers us to self-organise, collaborate, co-create and rapidly inspect and adapt everything we do – allowing us to respond at pace to our customers’ needs. It encourages variety of thought and enables us to thrive, both individually and collectively.

We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We're committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We’re proud to have been accredited Disability Confident Leader and we’re committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please click here.

We’re a big business and we can offer a range of diverse full-time & part-time working patterns across our many business areas, which means that we can find something that works for you.  We work in a more blended pattern - combining office and remote working.  Our offices will continue to be where we connect, collaborate and innovate.  If you are applying internally, please speak to the Hiring Manager about how this can work for you - Everyone is welcome at Tesco.