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Permanent
Île-de-France
Paris
Research & Innovation
Full - Time
30-Jun-2025

For more than hundred years, L’Oréal believes that beauty needs Science. In a world now transformed by digital technology and the emergence of new scientific domains, we are confident in our ability to turn these opportunities into major innovations, closely linked to the new consumer expectations all over the world. Science & Technology are allowing us to invent safe, trustable, sustainable & responsible beauty products and experiences that will change people’s lives. 

L’Oréal Research & Innovation (R&I) has continuously invested upstream in its research with a high level of ambition. Our 4 100 L'Oréal R&I people are talented and highly skilled, located in major markets, working in a cooperative way, open to the world.

Within this department, we are looking for a Research Engineer in Physical Chemistry to coordinate and lead characterization campaigns for our raw materials (polymers and dispersed materials), in order to deepen our knowledge of their properties and potential. This permanent contract position is available starting September 2025 in Aulnay-Sous-Bois (93).

Your main missions will be to:

  • Contribute to and coordinate the entirety of raw material characterization campaigns (polymers and dispersed materials) to accelerate the transition of our portfolio, in line with our sustainable development commitments.
  • Experimentally implement analyses of polymer raw materials (rheology, DMTA, DSC) and dispersed materials (particle size, specific surface area, density, interactions with formulation solvents).
  • Manage the subcontracting of polymer and dispersed material characterization and exploit the results.
  • Contribute to the development of methods and expertise within our laboratories in thermal analysis and rheology.
  • Ensure the quality, traceability, and sustainability of data.
  • Ensure the structuring of results in a database for sharing with users.
  • Write and update analytical methods in accordance with the requirements of our Quality system.
  • Ensure written and/or oral communication of results.
  • Collaborate with other teams in the Analysis department in Aulnay as well as the various analytical hubs in France and internationally.
  • Ensure the safety of people and property, particularly through the operational management of technicians and the supervision of laboratory activities.

Your strengths for success:

  • Physical Chemist (Master's degree equivalent Bac+5 in Materials Science, Engineer and/or Master 2) specialized in polymers and/or dispersed materials.
  • Good knowledge of physico-chemical analysis techniques for raw materials (laser particle sizing, microscopy, specific surface area, rheology, thermal analysis, etc.).
  • A solid command of scientific tools for data exploitation, processing, and structuring, including LIMS, Power BI, and eWorkbook as mandatory.
  • Fluent English.
  • Good laboratory safety practices.

You are:

  • Recognized for your rigor and pragmatism, you are results-oriented.
  • Endowed with a strong team spirit, combining collaboration, expertise, and pedagogy.
  • Both organized and flexible with good autonomy; you are comfortable managing complexity and interacting with multiple stakeholders.
  • Adaptable and willing to develop new technical skills.
  • Uncompromising regarding laboratory safety.
  • Proactive and critical, you do not hesitate to take initiatives and challenge the status quo when appropriate.



If you identify yourself in this position, please apply by uploading your resume in PDF. 

The L'Oréal Group is convinced that difference is a deep source of wealth, that allows everyone to grow, to challenge themselves and to go further. We strongly encourage everyone to always dare and never censor themselves. Skills can always be learnt. We will be delighted to exchange with you! 


To discover our scientific and technical functions at l'Oréal Research & Innovation, please check our career website : https://careers.loreal.com/en_US/content/ResearchInnovations?3_4_3=128 
Click here to discover the 3 key steps of our recruitment process: https://bit.ly/RIrecruitment





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