A doctor with degrees in political science and anthropology, he has been involved in humanitarian and medico-social work in France and internationally for nearly twenty years.

Between 2000 and 2008, he held various positions at Médecins Sans Frontières France, both at headquarters and in the field, in Eritrea, Liberia, Afghanistan, Niger and Iran.

He served as Director of Operations at Médecins du Monde France from 2009 to 2018. In 2020, he played a key role in the fight against the Covid-19 pandemic, acting as medical coordinator for a Covid centre for people in vulnerable circumstances run by the Aurore association and the City of Paris, as well as for a Covid vaccination centre.

In 2023, he became vice-president and was appointed president of Médecins du Monde on 8 June 2024. Alongside his work with the organisation, he conducts research into humanitarian issues and health, social and environmental inequalities. He teaches at the Institut d’Études Politiques de Toulouse and at the University of Paris I La Sorbonne. He is also an associate researcher at IRIS (Institut de relations internationales et stratégiques) and at ICM (Institut Convergences Migrations). He is the author of a documentary film and several books, the latest of which, *Geopolitics of Humanitarian Action*, was published by Eyrolles in 2025.