Job area
Research & Development
Marcq-en-Barœul, France
Contract type
Permanent Contract

Job description

In this context, Gnosis by Lesaffre is recruiting a Safety Scientist to join its Research and Application department. You will be part of the Substantiation & Applications Team and report to the Substantiation & Applications Team Leader.

The Substantiation & Applications team is responsible for the assessment and substantiation of the efficacy and safety of every ingredient of the commercial range and innovation pipeline of Gnosis by Lesaffre. Our portfolio includes usable nutritional actives, probiotics and prebiotics, and nutritional/functional yeasts obtained by biotransformation and that benefit human wellbeing. The team is also highly involved in the valorization of the scientific results through oral and written communications.

The Substantiation & Applications team is working very closely with the Market Managers and Key Account Managers, providing support to develop promotional materials and answer customers’ requests. An equivalent support is brought to Regulatory Affairs Specialists to complete market access and claims dossiers. Finally, collaborators of the team are project managers, thus coordinating every aspect of the development of new products as well as multidisciplinary project teams.

Main Missions

  • Coordinate and Manage Project Team responsible to consolidate/strengthen our Knowledge on the Safety on our portfolio of Products.
  • Collect available internal information and in the literature (search in science & toxicology databases) as well as review and synthesis of relevant publications.
  • Structure, elaborate, write and update the “safety book” for each product based on existing internal data.
  • Work closely with Regulatory Affairs Managers to collect their needs and perform a gap analysis.
  • Propose/recommend complementary safety/toxicology trials according to this data gap.
  • Set-up and coordinate identified non-clinical and/or clinical studies with external specialists and CROs. It includes the active involvement into the design, the set-up, the monitoring and the promotion of non-clinical & clinical studies.
  • Provide scientific support in answering substantiation-related customers’ request related to the safety of our products.



  • Life sciences engineering degree or master’s degree with human health specialization, Pharma or PhD degree.

3 to 10 years’s experience in:

  • Expertise in toxicology
  • Scientific writing / Literature review, analysis and synthesis
  • Project management


  • Deep knowledge and proven experiences of the safety and toxicological environment of products in the field of Nutrition and Food Supplements (non-clinical and clinical studies)
  • Fluent in English.

Technical skills:

  • Project management
  • Toxicology study designs, set up, monitoring and promotion
  • Ability to analyze and summarize informations (Literature review and synthesis)
  • Scientific writing and oral presentations (English)

Company description

For over 30 years, Lesaffre has been involved in Human Health & Nutrition as part of its ambition to Better Nourish and Protect the Planet. In November 2018, Lesaffre acquired Gnosis Advanced Biotech and officially combined it with Lesaffre Human Care to form a new Business Unit named Gnosis by Lesaffre. In May 2021, Lesaffre acquired NattoPharma to continue to strengthen its Human Health & Nutrition business.

At Gnosis by Lesaffre, we are committed to cultivating and to delivering nutritional actives, probiotics, and nutritional and functional yeasts that benefit human health and wellbeing, thanks to the power of microorganisms and biotransformation processes like fermentation. Put differently, we explore life to improve living.

Our vision: At Gnosis by Lesaffre, we strive for a world that moves better, digests better, ages better, feels better, and, ultimately, lives better thanks to microorganisms and biotransformation.