Data Scientist

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 Data Scientist Roche Digital Technology (RDT) is where innovation meets purpose.  As a global team at the heart of Roche, we are a community of business-minded technologists committed to help shape tomorrow’s digital future of healthcare. Our mission is to power Roche through cutting-edge digital technologies, harnessing the potential of artificial intelligence, data, and scalable tech innovations. Driven by purpose and passion, we’re building a future where digital is a core strength across all of Roche, enabling smarter ways of working, unlocking human potential, and driving breakthroughs that truly matter for millions of patients around the world.  You'll work alongside curious, ambitious technologists who value ownership, rigour, and fast, visible impact over process for its own sake. Rather than settling into one fixed lane, you'll move with the work as priorities shift, growing your expertise across a genuinely wide range of problems. If you want your day-to-day work to reach millions of patients and to help shape what a still-emerging technology looks like in practice, this is a rare moment to join at the ground floor. At Roche, we offer a hybrid work model that combines flexibility with in-person collaboration. For now, we require our employees to be in our Warsaw or Poznań office on average two days per week. The specific office days may vary depending on business needs, such as workshops, conferences, town halls, team meetings, and other collaborative events. The opportunity:  Roche's AI Function builds the platforms, tools, and data science muscle that let teams across Roche turn AI, GenAI, and agentic ideas into real products, fast. We make it safe, simple, and scalable to build with LLMs, enterprise data, and orchestration, so experimentation stops staying experimental and starts driving real business value. And now we're pushing further into agentic AI: systems that reason, plan, and act on their own, under human oversight. Join us and help define how Roche builds, evaluates, and governs that next generation of AI at enterprise scale. The kind of work you'll do  Build and ship • Design and ship AI/ML solutions, from prototype to a monitored capability people actually depend on, including Roche's next generation of agentic AI: systems that plan and execute complex, multi-step work autonomously. Work closely with product owners, engineers, and business stakeholders throughout. • Turn ambiguous problems into clear modelling approaches, and explain the trade-offs in language anyone can follow. Choose the right tool for the problem: a classical model, a fine-tuned model, retrieval over a foundation model or an agentic workflow, rather than reaching for an LLM by default. • Write clean, production-ready, reproducible code, and help shape the reusable patterns the wider team relies on. Bring rigour • Bring rigour to every experiment. Solid baselines, held-out testing, real error analysis. No shortcuts. • Treat evaluation as core craft, not an afterthought. Build eval sets and harnesses for GenAI systems, use golden datasets and regression checks for prompts, and statistically evaluate outputs for safety, reliability and consistency, offline and in production. • Root solutions in real user feedback, not just lab results. Measure and inform • Power decisions with analytics. Surface the cost, value, adoption, and usage data that tells AI leadership what's working and where to invest next. Govern and share • Build within Roche's governance, security, and compliance guardrails, from day one of a project to the last. • Contribute to those guardrails in practice: help design the checks that help embed fairness, explainability and privacy into pipelines so they are enforced rather than aspirational. • Share what you learn through reviews, demos, and onboarding docs. No lesson stays siloed. Who you are : Technical depth • Hands-on expertise in data science and software engineering. Python, LLMs, RAG pipelines, agentic workflows. Equally comfortable writing production code, designing system architecture, or setting integration standards. • Evaluate and fine-tune pre-trained models for domain use. Design RAG and search/synthesis architectures. Build evaluation harnesses and statistically evaluate outputs for safety, reliability, and consistency. • Strong NLP foundations: preprocessing, language modelling, sentiment analysis, NER. • A solid core in statistics, model evaluation, feature engineering and standard algorithms • Real depth on vector embeddings, search theory, and vector database selection and architecture, along with prompt and context engineering. Strategic and operational range • Comfortable moving from strategic roadmap planning to solving ad-hoc technical problems on the ground. Skilled at bridging non-technical stakeholders and technical implementation. • Comfortable building MLOps/LLMOps pipelines for continuous deployment and monitoring, including observability for LLM systems (tracing, tokens, latency, cost telemetry and drift and hallucination monitoring).  • Comfortable forecasting and optimising infrastructure and API costs, and managing platform vendor relationships to keep tools interoperable, secure, and future-proof. Communication • Strong written and verbal English, with the ability to explain technical trade-offs to technical and non-technical audiences alike. • A learning posture that keeps pace with a fast-changing field, with enthusiasm for knowledge-sharing.   Preferred/nice to have: • Hands-on experience deploying enterprise AI solutions on AWS or Azure (GCP exposure a plus). • Model risk management, fairness and bias mitigation, transparency, explainability, and data privacy. • Pharma, healthcare, or financial services, including GxP compliance and handling sensitive information, plus awareness of emerging compliance standards for GenAI and foundation models. What You Get • Salary Range: 170’100.00 - 243’000.00 - 315’900.00 PLN Annual based on an employment contract (Umowa o Pracę). • Annual Performance Bonus: Target bonus of 15% based on performance. • Dedicated Training Budget: Funding for certifications, AI/tech courses, global conferences, and diversified career paths. • Recharge Fridays: 2 additional paid Fridays off per quarter available to completely disconnect. • Take Time Program: Up to 3 months of sabbatical leave to use for any personal purpose. • Flex Location: Freedom to work remotely from different global locations for specified periods throughout the year. • Take Time for Charity: Up to 2 weeks of additional paid leave to engage in volunteering initiatives. • Comprehensive Benefits: Private healthcare (LuxMed packages), group life insurance (UNUM), MultiSport card, and vacation subsidy. • Stock & Tech Perks: Roche stock share purchase program, yearly sales of company laptops and cars, and much more! Apply directly and join us in shaping the future of healthcare. If you feel this offer suits a friend of yours, feel free to share it. Want to know what it’s like to be a part of Roche IT first-hand? Check out our blog! 👉 https://careers.roche.com/global/en/we-are-roche The controller of your personal data is Roche Polska Sp. z o.o., ul. Domaniewska 28, 02-672 Warsaw. The data is processed for the purpose of recruitment. You have the right to access your data, rectify it, delete it, limit processing, transfer it and - if processing is based on your consent - withdraw this consent at any time. Contact the Dat