
R&D
Where your curiosity drives the
miracles of
science
Principal Biostatistician-Clinical Statistics
At a glance
Bring your curiosity to a team where deep immunoscience meets cutting-edge innovation. Across oncology, rare diseases, neurology, and vaccines, you’ll work at the intersection of lab science and AI-powered discovery — all while collaborating across boundaries to turn breakthrough ideas into real-world impact. Whether you want to deepen your scientific expertise or grow as a leader, you’ll find the opportunity here.
Job title: Principal Biostatistician
About the job
Our Hubs are a crucial part of how we innovate, improving performance across every Sanofi department and providing a springboard for the amazing work we do. Build a career and you can be part of transforming our business while helping to change millions of lives. Ready? As a Principal Biostatistician, you’ll Lead or support one or several early/late phase studies, under minimum supervision of statistical team leader.
We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve people’s lives. We’re also a company where you can flourish and grow your career, with countless opportunities to explore, make connections with people, and stretch the limits of what you thought was possible.
Main responsibilities:
Support the clinical study design (including protocol development), the study setup and conduct.
Conduct the statistical analyses according to the SAP, prepare statistical methods & provide statistical insight into interpretation and discussion of results sections for the clinical study report (CSR) and/or publications to ensure the statistical integrity of the content according to internal standards and regulatory guidelines and in compliance with SOPs.
Accountable for all assigned statistical deliverables related to one study or specific domain: statistical sections in protocol including sample size calculation, randomization specifications, and statistical methodology etc., SAP, data surveillance, statistical analysis results for CSR and its appendices (TLGs and in-text tables)
Propose, prepare and perform exploratory data analyses, ad-hoc analyses as relevant for the study or project objectives.
Contribute to define and review the specific deliverables related to Transparency and Disclosure
Work with the programming team to provide definitions, documentation and review of derived variables, as well as the quality control plan.
Perform and/or coordinate with study programmer the production of statistical analyses.
Review and examine statistical data distributions/properties
Ensure productive collaborations with other functions in the aligned study team and/or safety monitoring team and in communicating with senior leadership.; Promoting teamwork, quality, operational efficiency, and innovation.
Represent statistics to participate in scientific or technology working groups or cross function initiatives
About you
Experience: Experience in pharmaceutical or related industry experience with clinical trials
Soft and technical skills: Demonstrated interpersonal and communication skills
Good knowledge and good understanding of statistical concepts and techniques
Good knowledge of pharmaceutical clinical development
Able to work in departmental computing environment, can do advanced statistical analyses using SAS, R and other languages.
Education: MS or PhD in Statistics or relevant fields
Languages: Excellent communication in English, both oral and written
Why choose us?
Bring the miracles of science to life alongside a supportive, future-focused team.
Discover endless opportunities to grow your talent and drive your career, whether it’s through a promotion or lateral move, at home or internationally.
Enjoy a thoughtTake good care of yourself and your family, with a wide range of health and wellbeing benefits including high-quality healthcare, prevention and wellness programs and at least 14 weeks’ gender-neutral parental leave.
Pursue Progress. Discover Extraordinary.
Join Sanofi and step into a new era of science - where your growth can be just as transformative as the work we do. We invest in you to reach further, think faster, and do what’s never-been-done-before. You’ll help push boundaries, challenge convention, and build smarter solutions that reach the communities we serve. Ready to chase the miracles of science and improve people’s lives? Let’s Pursue Progress and Discover Extraordinary – together.
At Sanofi, we provide equal opportunities to all regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, protected veteran status or other characteristics protected by law.
Watch 'One day at Sanofi' and check out our Diversity Equity and Inclusion initiatives at sanofi.com

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Why work with us
- Expand your horizons. Grow through curiosity, with support to move, learn, and lead in a culture that champions mentorship, mobility, and bold development.
- Accelerate results with technology. Harness the power of AI and automation to push scientific boundaries and reimagine what's possible in drug discovery.
- Impact through inclusive innovation. Help deliver better science and fairer outcomes by driving inclusive research that reaches more people, in more meaningful ways.
- Turn patient needs into breakthrough science. Drive scientific breakthroughs that start with patient needs – and end in treatments that change lives.
Meet Nils Libert, Associate Scientist
Meet Nils Libert, an Associate Scientist in Belgium, where he plays a key role in advancing groundbreaking research. Learn how his work helps drive innovation, uncover new scientific possibilities, and contribute to life-changing treatments that impact patients around the world.

"At Sanofi, we are building an R&D engine powered by the best science, digital innovation, and a commitment to transforming the lives of patients around the world."

Houman Ashrafian
EVP & Head of R&D
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