Manufacturing and Supply
Where the
miracles of
science are made
a reality for patients

Le contenu du poste est libellé en anglais car il nécessite de nombreuses interactions avec nos filiales à l'international, l'anglais étant la langue de travail.

The job posting is in English given the significant interactions required with our global subsidiaries, for which English is the working language.

Job title: Senior Scientist – Chemical Process Development

• Location: Sisteron

About the job

As Senior Scientist, Chemical Process Development within our MSAT (Manufacturing Sciences, Analytics and Technology) team, you'll contribute to the industrialization of Sanofi's future pipeline and secure industrial performance through process development, technical support, and innovation. Ready to get started?

Join our Sisteron site in beautiful Provence, where R&D, MSAT, and Production unite on a single campus. As part of the Aramon/Sisteron/Mourenx chemistry platform, you'll work at the forefront of new molecule launches, developing and optimizing chemical processes that bring life-changing medicines to patients worldwide. This unique environment offers hands-on laboratory work combined with direct industrial impact.

About Sanofi:

We’re an R&D-driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system, and innovative pipeline – enables us to invent medicines and vaccines that treat and protect millions of people around the world. Together, we chase the miracles of science to improve people’s lives.

Main responsibilities:

• Develop and optimize chemical processes for new molecule launches through hands-on laboratory experiments, working under fume hood in strict compliance with HSE and GMP standards
• Support industrial technology transfers from development to commercial production, collaborating with CMC, site teams, and global MSAT networks
• Provide technical expertise to resolve production issues, conduct deviation investigations, and propose solutions for batch recovery
• Drive continuous improvement by optimizing existing processes and participating in supplier qualification programs (MSEP)
• Mentor junior scientists and technicians on laboratory techniques, process development methodologies, and safety practices
• Communicate effectively with management and cross-functional teams through reports, presentations, and technical committees
• Ensure rigorous documentation of experiments and results in electronic laboratory notebooks (ELN)

About you

• Experience: Hands-on experience in organic synthesis and laboratory-scale chemical process development; familiarity with process industrialization, scale-up studies, and GMP environments is highly valued
• Soft and technical skills:

• Strong foundation in organic chemistry (reactions, extraction, crystallization, distillation);
• Proficiency in analytical techniques (TLC, HPLC, NMR, GC)
• Customer-oriented mindset with agility to switch between priorities
• Team spirit and ability to mentor others
• Proactive problem-solving approach

• Education: PhD in organic chemistry or chemical engineering strongly preferred; Master's degree or Engineering degree (Bac+5) in relevant scientific discipline with significant experience will also be considered
• Languages: French (mandatory for daily operations); English (good level required for international collaboration and scientific documentation)

Why choose us?

• A unique integrated environment where development laboratory and industrial production coexist on the same site – directly contribute to launching new molecules with measurable impact
• High-value, sought-after expertise in chemical process development, industrial technology transfer, GMP quality management, and industrial unit operations that will accelerate your career
• Direct impact on patients' lives – every experiment you run helps bring medicines to market that improve the health of millions worldwide
• Expert mentoring and collaboration within a dynamic MSAT team, with access to site and global scientific experts in a strong knowledge-sharing culture

PursueProgress. 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. 

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.