Senior AI & ML Data Scientist — Enterprise Innovator

Roche; Welwyn; On-site; GBP 80,000 - 120,000; Full time

Job summary

Roche UK, based in Welwyn Garden City, is transforming healthcare by embedding advanced AI into commercial and medical strategies. As a Senior Data Scientist, you will architect cutting-edge AI frameworks, transform vast enterprise data into actionable insights, and help double the number of patients accessing life-changing medicines.

You will lead the end-to-end development of AI solutions, prototype state-of-the-art models, and collaborate with data engineers and IT teams to ensure scalable,

Qualifications

• Masters or PhD in Data Science, Computer Science, Engineering, Statistics, or a related quantitative field (or equivalent practical experience).
• Proven experience building, deploying, and scaling machine learning models in Python and SQL with modern AI frameworks.
• Advanced causal inference techniques (A/B testing, propensity score matching, synthetic controls) to measure impact.
• Strong cross-functional leadership and ability to drive initiatives across teams.
• Exceptional communication skills to translate technical concepts into business value.

Responsibilities

• Architect end-to-end Enterprise AI capabilities and deploy models to production.
• Prototype Generative AI, RAG systems and predictive models to address business challenges.
• Build scalable data pipelines with CI/CD and MLOps integration.
• Bridge technology outputs with strategic business decisions for senior stakeholders.
• Stay at the forefront of GenAI, ML, and NLP developments for the org.
• Mentor data science colleagues and provide hands-on guidance on model selection.

Skills

Python

SQL

ML frameworks

Communication

Education

Masters/PhD in quantitative field

Tools

CI/CD

MLOps

Git

Job description

Roche UK, based in Welwyn Garden City, is transforming healthcare by embedding advanced AI into commercial and medical strategies. As a Senior Data Scientist, you will architect cutting-edge AI frameworks, transform vast enterprise data into actionable insights, and help double the number of patients accessing life-changing medicines.

You will lead the end-to-end development of AI solutions, prototype state-of-the-art models, and collaborate with data engineers and IT teams to ensure scalable,