Skip to main content
Research and Development

R&D
Where your curiosity drives the
miracles of
science

Enzymology Senior Scientist

Vitry-sur-Seine, France
Apply now

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.

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.

This job offer is accessible to all, regardless of gender.

Job title: Enzymology Senior Scientist

  • Location: Vitry-sur-Seine, France

About the job

The mission of the CMC Synthetics-Process Chemistry Organization is to deliver robust, innovative, and eco-designed synthetic routes and processes for Sanofi’s medicines in the most efficient, sustainable, and cost-effective way. Your role will be to discover and develop enzyme to be implemented in the biocatalytic processes.

Are you ready to shape the future of medicine? The race is on to speed up drug discovery and development to find answers for patients and their families. Your skills could be critical in helping our teams accelerate Progress. Join our state-of-the-art Enzyme Biology team as an Enzymology Senior Scientist, and you’ll contribute to developing new innovative and eco-designed synthetic processes for Sanofi components and products, while enjoying numerous opportunities to broaden your experience and hone your skills.

Main responsibilities:

  • To establish the strategy for the discovery, screening and optimization of enzymes for each project, within timelines and budget
  • To take part of the global development of the strains considering the requirements of the analytical lab, the HT screening, the purification, after discussion with the concerned lab
  • To plan, coordinate, and/or execute the lab experiments, including the use of robotics tools
  • To develop the new molecular biology and biochemistry methods
  • To realize bibliographic and technologic watch related to the topics ongoing in order to identify new technologies and techniques of interest for delivering best in class results
  • To analyze, interpret and present the progress and the results in a multidisciplinary and international environment
  • To write the electronic lab book and document protocols required for the activity, as well as descriptions of analytical methods and chemical protocols in English
  • To manage scientifically collaborators according to projects requirements, and to take part to the lab organization (maintenance, lab supply, HSE)

About you

Experience:

  • Molecular biology, microbiology and biochemistry knowledge are required
  • Experience in protein expression and in the use of enzyme in biocatalysis to produce API intermediates
  • Knowledge of microbiology and bacterial fermentation
  • Knowledge of in silico methods for enzyme optimization
  • Knowledge of Machine Learning/Artificial intelligent algorithms is a plus

Soft and technical skills:

  • Good communication skills and ability to work cross-functionally.Provide clear and structured explanations of its studies to other local functions and to other cross site functional groups
  • Rigorous and organized, show initiative, proactivity and curiosity, manage priorities
  • Molecular biology technics required for the development of enzyme optimization
  • Interest in artificial intelligence and in silico modelling would be a plus
  • Ability to build and conduct research scientific program related to project of interest and to guide others in these areas
  • Ability to manage the technical monitoring of CRO/CDMO subcontracting (technical discussion for the outsourcing of enzyme optimization)

Education:

  • PhD in biocatalysis, biochemistry, biotechnology, molecular biology or any related topics or Master degree with proven experience in any of cited topics

Languages:

  • French
  • English

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 thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact
  • Take 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
  • Play an instrumental part in creating best practice within our manufacturing facility

PursueProgress. Discover Extraordinary.

Progress doesn’t happen without people – people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. You can be one of those people. Chasing change, embracing new ideas and exploring all the opportunities we have to offer. Let’s pursue progress. And let’s 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, or gender identity.

Watch our ALL IN videoand check out our Diversity Equity and Inclusion actions at sanofi.com!

#LI-FRA

#LI-Onsite

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

Apply now
Illustration of map pins on globe

Find out more about this location

Scientist in a lab coat examines a sample under UV light in a modern laboratory environment.

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.

icon of a speech bubble
"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

Discover more

Scientist in a Sanofi lab

Our R&D Focus Areas

Discover how we're reshaping the future of medicine through immunoscience – unlocking bold, cross-disease breakthroughs that were unimaginable just a decade ago.

Learn more

Close-up of lab equipment in use

Meet Sanofians in the Labs

Step inside our labs and hear from the scientists turning cutting-edge science into real-world impact—driven by curiosity, collaboration, and purpose.

Voices from the Labs

Join our
talent community

What could we achieve together? Every Sanofian works on projects that truly make a difference to people’s lives.

Sign up today and discover our latest opportunities as soon as they’re available.