Data Scientist – Welwyn Garden City, United Kingdom of Great Britain and Northern Ireland

Overview

As a Data Scientist at Tesco, you design, build, and deploy machine learning and generative AI solutions that shape how we serve customers and run the business. You work across domains with ML Engineers and Software Engineers to ensure scalable, maintainable data products and clear communication to non-technical stakeholders. You stay current with GenAI and LLM advances to drive impactful innovations. This role offers cross-domain exposure, collaboration, and a culture of continuous learning.

Pay / Benefits

• Annual bonus up to 20%
• Holiday 25 days + personal day + bank holidays
• Private medical insurance
• Maternity and adoption leave
• Paternity leave
• Virtual GP service and EAP

Responsibilities

• Design and implement robust models and prototypes
• Evaluate models by statistical and business impact metrics
• Scale models into production and maintain alignment with tech standards
• Collaborate with ML Engineers and Software Engineers
• Communicate complex ideas to non-technical stakeholders
• Contribute to internal knowledge sharing and external data science community
• Stay updated on GenAI/LLMs and integrate emerging techniques into data products

Key requirements

• Strong foundation in machine learning, statistics, and programming
• Experience designing and implementing models in Python
• Experience with large-scale data and distributed computing environments
• Beneficial experience with generative AI, LLMs, and deep learning frameworks
• Desirable exposure to sequential modelling and causal inference
• Strong communication to technical and non-technical audiences
• Scientific mindset, critical thinking, and questioning ability
• Proactive learning and knowledge sharing
• Higher degree in Mathematics, Computer Science, Engineering, or Physics preferred or equivalent commercial experience
• Strong coding practices including version control and testing

• curiosity
• proactiveness in learning
• clear communication
• Python
• distributed computing
• generative AI

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