Data Scientist

About the role

At Tesco, our Data Science team builds scalable solutions across stores, online, supply chain, marketing, and Clubcard. We apply advanced machine learning, generative AI, and large language models (LLMs) to personalise customer experiences, optimise operations, and drive innovation. Team members rotate across domains to broaden their expertise and impact.

Responsibilities

• Develop and deploy machine learning and generative AI solutions that directly impact customer experience and business operations.
• Design and implement robust models, experiment with new approaches, and translate business problems into data science solutions.
• Build prototypes, evaluate model performance statistically and in terms of business impact, and scale models into production.
• Collaborate closely with Machine Learning Engineers and Software Engineers to ensure solutions are efficient, maintainable, and aligned with Tesco’s technology standards.
• Communicate complex ideas clearly to non-technical stakeholders, contribute to internal knowledge sharing, and represent Tesco in the external data science community.
• Stay current with developments in GenAI and LLMs, evaluate and integrate emerging techniques into data products.

Qualifications

• Strong foundation in machine learning, statistics, and programming.
• Proficiency in Python and experience working with large‑scale data in distributed computing environments.
• Hands‑on experience with generative AI, LLMs, and deep learning frameworks is valued.
• Higher degree in a quantitative discipline (Mathematics, Computer Science, Engineering, Physics) preferred; equivalent commercial experience accepted.
• Strong coding practices, including version control and testing.
• Scientific mindset, critical thinking, and ability to ask the right questions.
• Proactive in learning new methods and staying up to date with latest developments.

Benefits

• Annual bonus scheme of up to 20% of base salary.
• Holiday starting at 25 days plus a personal day and bank holidays.
• Private medical insurance.
• 26 weeks maternity and adoption leave (12 months service required at the qualifying date), followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, and 6 weeks fully paid paternity leave.
• Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, and free access to a range of experts for mental wellbeing.

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