Postdoctoral Researcher at CNRS France

About Position/Job

The CNRS (National Center for Scientific Research) invites applications for a Postdoctoral Researcher at the Laboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS) in Toulouse, France. The position is part of the FLUOREAL project, focused on understanding the ecological and biogeochemical dynamics of per- and polyfluoroalkyl substances (PFAS) in large tropical rivers such as the Red and Amazon Rivers and their coastal environments. Starting February 2026, the postdoctoral researcher will collaborate with international partners in Brazil, Vietnam, and Europe, developing innovative analytical tools, modeling PFAS transport, and assessing bioaccumulation in aquatic species. This role offers a unique interdisciplinary experience across chemistry, ecology, and environmental modeling, providing opportunities for scientific publications, workshops, and international collaborations under the supervision of Dr. V. Fauvelle.

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Position/Job Details

Position: Postdoctoral Researcher
Institution: CNRS
Department: Laboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS)
Research Field: Environmental Science, Earth Science, Global Change
Location: Toulouse, France
Number of posts: 1
Job Type: Full-time, Temporary, Postdoctoral
Start Date (Anticipated): February 2026
Working Hours: 35 hours/week
Required Degree/Diploma: PhD

Research Area

PFAS analytical chemistry (LC-MSMS, GC-MSMS, LC-HRMS, TOP assay, NTS approaches)
Environmental biogeochemistry and aquatic ecotoxicology
PFAS transport and dispersion modeling (SCHISM, NEMO-PISCES)
Bioaccumulation and trophic transfer in fish, crustaceans, mollusks
Global change and riverine-coastal ecosystem interactions

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Eligibility & Qualifications

Minimum Requirements:

PhD in analytical chemistry, biogeochemistry, environmental sciences, or related field
Strong expertise in mass spectrometry and complex analytical datasets
Knowledge of persistent organic contaminants, ideally PFAS
Excellent analytical, writing, and communication skills in scientific English; French appreciated

Preferred Qualifications:

Experience in environmental modeling or aquatic ecotoxicology
Ability to work in interdisciplinary international research teams
Capacity to interact with multicultural partners and adapt to collaborative environments

Key Responsibilities

Deploy and optimise PFAS analytical toolbox, including interlaboratory protocol transfers
Analyse environmental samples from tropical rivers and study PFAS fate
Contribute to modeling PFAS transport in riverine and coastal systems
Investigate bioaccumulation and trophic magnification in aquatic species
Prepare scientific publications and manage open-access data
Participate in workshops, conferences, and science communication initiatives