Biocatalysis & Microbial Fermentation Senior Scientist

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: Biocatalysis & Microbial fermentation Senior Scientist

• Location: Vitry-sur-Seine

About the job

As Senior Biocatalysis Scientist within our CMC Synthetics-Process Chemistry Organization, you'll help design, implement, and lead innovative biocatalytic processes to deliver robust, eco-designed synthetic routes for Sanofi's medicines in the most efficient and sustainable way. You'll play a key role in shaping the future of pharmaceutical manufacturing through enzyme screening, reaction engineering, and digitalized laboratory approaches. Ready to get started?

Join our Vitry-sur-Seine site, Sanofi's Center of Expertise in biocatalysis and a cutting-edge hub for sustainable chemistry innovation. As part of the Enzyme Production & Bioprocess team, you'll lead high-impact projects driving green chemistry transformation, digital innovation (DoE, AI tools, robotics), and process scale-up across global operations. Work with a multidisciplinary expert team, shape how medicines are made more sustainably, and enjoy career growth in a collaborative, forward-thinking environment where your skills will directly accelerate drug development for patients and their families.

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:

• Define enzyme screening strategies and biocatalytic process development for projects, ensuring alignment with timelines and budgets

• Perform reaction engineering, optimize biocatalytic transformations, and develop kinetic modeling approaches for enzymatic reactions

• Perform fermentation activities to produce enzymes and biocatalysts

• Implement data science solutions (DoE methodologies), program and operate robotics, and leverage digital tools for process optimization

• Plan, supervise, and execute laboratory experiments; ensure successful technology transfer of biocatalytic processes to pilot scale

• Document experimental work, generate comprehensive reports, and communicate results to multidisciplinary international stakeholders while maintaining scientific awareness

• Implement change management for new ways of working, support digital transformation projects.

What we offer:

A fixed salary over 12 months, as well as profit-sharing & incentive schemes based on Sanofi Group results.

Because taking care of our employees is also our mission: 31 days of paid leave + additional RTT days depending on your status, remote working up to 2 days/week, quality health insurance, public transport reimbursement up to 80%; maternity leave (18 weeks) and parental welcome leave (14 weeks), Employee Savings & Retirement Plans with employer contributions, works council (CSE) benefits, internal and international mobility opportunities, a personalized training offering to support you throughout your career, and many more benefits to discover here.

About you
 

• Experience: 3-5 years of experience in applied biocatalysis for small molecule synthesis (APIs, fine chemicals) with proven expertise in enzyme screening, biocatalytic process development and microbial fermentation
• Soft and technical skills:

• Knowledge of digital enablers and laboratory automation tools (robotics programming, kinetic modeling, DoE methodologies)
•  Ability to work in multifunctional and multicultural environments with strong cross-functional collaboration skills
•  Leadership, autonomy and decision-making skills with rigorous organization and proactive initiative
• Analytical thinking and strategic capabilities in reaction engineering, process optimization, and scale-up technology transfer

• Education: PHD in Chemistry, Chemical Engineering, Biotechnology or related pharmaceutical field or Master's Degree with minimum 5 year of proven experience.
•  Languages: Strong command of the English and French language, both spoken and written

Why choose us?
 

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