Senior Data Scientist - AI & Machine Learning in Welwyn Garden City

## 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! #J-18808-Ljbffr