Senior Data Scientist - AI & Machine Learning

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

At 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 Position

At 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 Are

You 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: Masters 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.

Who we are

A healthier future drives us to innovate. Together, more than 100'000 employees across the globe are dedicated to advance science, ensuring everyone has access to healthcare today and for generations to come. Our efforts result in more than 26 million people treated with our medicines and over 30 billion tests conducted using our Diagnostics products. We empower each other to explore new possibilities, foster creativity, and keep our ambitions high, so we can deliver life-changing healthcare solutions that make a global impact.

Lets build a healthier future, together.

The statements herein are intended to describe the general nature and level of work being performed by employees, and are not to be construed as an exhaustive list of responsibilities, duties, and skills required of personnel so classified. Furthermore, they do not establish a contract for employment and are subject to change at the discretion of Roche Products Ltd. At Roche Products we believe diversity drives innovation and we are committed to building a diverse and flexible working environment. All qualified applicants will receive consideration for employment without regard to race, religion or belief, sex, gender reassignment, sexual orientation, marriage and civil partnership, pregnancy and maternity, disability or age. We recognise the importance of flexible working and will review all applicants’ requests with care. At Roche difference is valued and we are proud to be an equal opportunity employer where you are encouraged to bring your whole self to work.