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# Senior Data Scientist

- **Company:** Marks and Spencer plc (UK)
- **Location:** UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Machine Learning, Recommender Systems, Software Deployment, Large Language Models, Machine Learning Operations
- **Published:** August 23, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-data-scientist/44880147

## About the Role

What You'll doYour key accountabilities will includeUse machine learning, recommender systems, and LLM-powered conversational AI to deliver deeply personalised product and outfit recommendations.Design, develop, and productionise end-to-end ML and GenAI systems, including retrieval, ranking, and LLM-based components powering conversational experiencesDesign and develop frameworks for evaluating LLM outputs (e.g. relevance, grounding, safety, and user satisfaction) and integrate them into continuous experimentation pipelines.Partner cross-functionally to deliver production-ready solutions aligned to product and commercial goals. Contribute to best practices in model development, deployment, and monitoring across the team.Who you areYour skills and experience will includeProven track record of owning ML/AI problems end-to-end - from framing and modelling through to production deployment, monitoring, and continuous improvement - delivering measurable business impact., Applies strong software



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