Job Title: Project Toxicologist

• Location : Marcy-l'Etoile – France

About the job

As Project Toxicologist within NCS & Predictive Sciences, you will provide safety strategy, supervision of toxicology experiments, and safety assessment of vaccines, adjuvants and monoclonal antibodies across all R&D stages and Life Cycle Management products. You will coordinate with other disciplines to evaluate impact of study outcomes on the product development, provide integrated risk assessments to project teams, and compile safety data into regulatory documentation. Your expertise will directly support the development of innovative prophylactic or therapeutic modalities that improve patient safety. Ready to get started?

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.

Key Responsibilities:

• Provide safety strategy and conduct toxicology evaluations and risk assessments in support of new vaccine projects
• Conduct toxicological safety assessments on new components, excipients or process residues,  
• Evaluate study outcomes and data, provide assessment on adversity of findings and potential impact on human health and project Progression
• Manage and monitor the conduct of GLP/non-GLP toxicity studies to ensure timely delivery, compliance, and quality of reporting
• Compile safety data into necessary internal, clinical, and regulatory documentation (IB, IND, IMPD, CTA, CTD, RMP, PBRER, Labelling, Pediatric plans) and provide answers to regulatory body questions
• Provide and communicate integrated risk assessments to project teams and partners, and contribute to meetings with Health Authorities
• Support NCS to ensure continuous improvement on core competencies, processes, and work practices
• Promote operational excellence through development and execution of appropriate processes and engagement with New Approach Methodologies (NAMs)

What we offer

A fixed salary over 12 months, complemented by an individual variable compensation, 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 + RTT days depending on your status, remote working up to 2 days/week, quality health insurance, public transport coverage up to 80%; maternity leave (18 weeks) and parental welcome leave (14 weeks), Savings & Retirement Plans with employer contributions, employee benefits (CSE), 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:

Demonstrated experience in vaccine toxicology and/or biopharmaceuticals with experience as study director in toxicology and project representative. Good understanding of vaccine and biopharmaceutical development with experience in R&D environment, pharmaceutical industry, and animal models

Technical and Soft Skills:

• Broad expertise in human and animal pathophysiology, pharmacology, and toxicology.
• Excellent communication skills with ability to manage workload, urgencies, and priority queries while maintaining high-level communication between all project actors.
• Strong team spirit and ethical responsibility towards laboratory animals and clinical trial volunteers.
• Knowledge of regulatory standards and NAMs

Education: Toxicology-certified background (PhD, Pharmacist, DVM, MD or certification in toxicology).

Languages: Fluent English and French (written and oral)

Why choose us?

Join the engine of Sanofi’s mission — where deep immunoscience meets bold, AI-powered research. In R&D, you’ll drive breakthroughs that could turn the impossible into possible for millions

• Work at the forefront of drug discovery, harnessing cutting-edge AI, data, and digital platforms to push the boundaries of science.
• Help improve the lives of millions of people globally by making drug development quicker and more effective.
• Enjoy opportunities to collaborate beyond your area of expertise, working with diverse teams across science, clinical, and digital fields to spark new ideas and drive breakthroughs.
• Accelerate your professional development with structured career paths designed for both scientific and leadership advancement. Grow in ways you never imagined through bold moves that stretch your potential, cross moves into other business areas, and short-term gigs that build your scientific expertise.

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.

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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.

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.

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