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Location
In office (Vitry-sur-Seine)
Employment
Full-Time

Confirmed on the employer's own hiring board on Sep 23, 2026. First seen by Alion on Sep 23, 2026. Sanofi scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Sanofi is a French pharmaceutical company formed in 1973 and assembled over five decades through a long series of mergers including Synthelabo, Aventis and Genzyme. It is now built around immunology and rare disease, with Dupixent for atopic dermatitis and asthma as by far its largest product, alongside a substantial vaccines division covering influenza, meningitis and the respiratory syncytial virus antibody Beyfortus. Headquartered in Paris, the group has sharpened its focus in recent years by separating its consumer healthcare business into the standalone company Opella and directing research spending toward biologics and immune science.

About the Role

We are looking for a highly motivated and talented Post-Doctoral Researcher to join our team in the Large Molecule Research platform at Sanofi. This position offers a unique opportunity to work on an ambitious and cutting-edge project focused on the discovery and engineering of 2-in-1 antibodies for the development of innovative therapeutic antibodies.

This is a complex and challenging project that will require strong scientific autonomy, versatility across multiple methodologies, and excellent collaborative skills in a cross-functional environment.

Key Responsibilities

  • Developing and implementing state-of-the-art technological methods for innovative antibody discovery using display technologies (phage display and/or yeast display)
  • Engineer and optimize 2-in-1 bispecific antibody formats for therapeutic applications
  • Perform biochemical and biophysical characterization of antibody candidates
  • Establishing robust and transferable methodologies, ready to be deployed in support of therapeutic areas
  • Conduct high-throughput screening and analyze large datasets with strong analytical rigor
  • Work in close collaboration with cross-functional teams
  • Present findings internally and contribute to publications and/or patent filings
  • Ensuring seamless integration of these new methods into the existing discovery pipeline

Required Profile

  • PhD in Protein Engineering or a related field
  • Industrial experience would be an asset
  • Demonstrated expertise in antibody discovery and/or engineering
  • Strong hands-on experience with display technologies (phage display and/or yeast display)
  • Solid knowledge of screening methodologies and biochemistry techniques
  • Bilingual: digitally fluent, and experimental mindset
  • Strong data analysis skills and ability to draw meaningful scientific conclusions
  • Ability to work autonomously while being a strong team player
  • Experience in cross-functional collaboration is a plus
  • Excellent written and oral communication skills in English

What We Offer

  • A stimulating scientific environment within a world-leading biopharmaceutical company
  • Access to state-of-the-art technologies and platforms
  • Opportunities to contribute to innovative therapeutic programs

A collaborative and inclusive team culture

Pursue progress, discover extraordinary

Better is out there. Better medications, better outcomes, better science. But 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. So, let’s be those people.

At Sanofi, we provide equal opportunities to all regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, ability or gender identity.

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

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