French political scientist and academic, as well as Researcher at the Paris Institute of Political Studies (Sciences Po). He was Scientific Coordinator of the European network RECWOWE ("Reconciliation, Work and the Welfare State") and is the author of dozens of articles on reforming welfare policies in France and Europe. Director of the Laboratoire Interdisplinaire d'Évaluaton des Politiques Publiques (LIEPP) and Researcher at the Centre national de la recherche scientifique (CNRS), he has also taught at Stockholm University, Harvard University's Center for European Studies and the European University Institute. He is a member of the Executive Board of the Society for the Advancement of Socio-Economics (SASE), based at the Centre for the Sociology of Organisations (Paris).