Senior Data Scientist - AI & Machine Learning

F. Hoffmann-La Roche AG; Welwyn Garden City; Hybrid; GBP 95,000 - 150,000; Full time

Job summary

Roche UK in Welwyn Garden City seeks a Senior Data Scientist to architect enterprise AI, transform vast data into actionable insights, and help expand patient access to medicines. Lead end-to-end ML development from data exploration to production deployment in collaboration with commercial and medical teams.

The role requires a Master’s or PhD in a quantitative field, deep Python/SQL expertise, and strong skills in causal inference, MLOps, and communicating complex concepts to senior

Qualifications

• Master's or PhD in a quantitative field required.
• Extensive experience building and deploying ML models in Python and SQL.
• Proven expertise in causal inference methods (A/B testing, propensity matching, synthetic controls).
• Strong cross-functional leadership and ability to communicate with senior stakeholders.

Responsibilities

• Architect end-to-end AI frameworks and production ML solutions.
• Prototype Generative AI, RAG systems, and predictive models for business challenges.
• Build scalable data pipelines with CI/CD and MLOps standards.
• Translate algorithmic outputs into clear, high-impact business insights and strategies.
• Mentor data science colleagues and guide technical decision-making.

Skills

Data science

Python

SQL

AI frameworks

MLOps

Leadership

Education

Master's or PhD in quantitative field

Tools

Python

SQL

AI frameworks

Job description

## Senior Data Scientist - AI & Machine LearningApply: Welwyn: Full time: Posted Today: End Date: October 19, 2026 (6 days left to apply): 202610-124942At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally. This is how we aim to prevent, stop and cure diseases and ensure everyone has access to healthcare today and for generations to come. Join Roche, where every voice matters.### ### The PositionAt Roche UK, we are transforming healthcare by embedding advanced AI and machine learning into the heart of our 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. Join us in Welwyn Garden City to lead high-impact technical innovation and shape the future of tech-enabled patient care.## The Opportunity* **Architect Enterprise AI:** Lead the end-to-end development of advanced machine learning models, from exploratory data analysis and feature engineering to production deployment.* **Drive Next-Gen Innovation:** Prototype state-of-the-art AI solutions, including Generative AI, RAG systems, and predictive models to solve complex commercial and healthcare challenges.* **Build Scalable Pipelines:** Partner with data engineers and global IT teams to ensure AI solutions are scalable, secure, and integrated with CI/CD and MLOps standards.* **Bridge Tech and Strategy:** Translate complex algorithmic outputs and statistical concepts into clear, high-impact business strategies for senior stakeholders.* **Advance Technical Excellence:** Stay at the forefront of the evolving AI landscape (GenAI, ML, NLP) to keep our organization at the cutting edge.* **Mentor and Guide:** Act as a technical subject-matter expert, providing hands-on guidance on model selection and mentoring data science colleagues. ## Who You AreYou are a visionary technical practitioner who thrives on turning complex organizational challenges into robust, scalable data science solutions. You bring a strong analytical mindset, a collaborative spirit, and a passion for using data to improve patient outcomes.To be successful in this role, you bring:* **Quantitative Foundation: Master’s** or PhD degree in Data Science, Computer Science, Engineering, Statistics, or a related quantitative field (or equivalent practical experience).* **Deep Data Science Expertise:** Proven professional experience building, deploying, and scaling machine learning models in Python, SQL, and modern AI frameworks.* **Advanced Causal Inference & Modeling:** Proven expertise in causal inference techniques (e.g., A/B testing, propensity score matching, synthetic controls) to isolate and measure true incremental business impact.* **Cross-Functional Leadership:** Demonstrated ability to lead complex data initiatives and collaborate effectively across diverse teams.* **Stakeholder Impact:** Exceptional communication skills with the ability to translate technical concepts into business value propositions.Together, we’ll advance along the whole patient journey with the aspiration to prevent, stop, and cure diseases. Ready to make a lasting impact? Apply today and help us shape the future of healthcare!