Xavier D'Haultfoeuille is a former ENSAI and ENSAE student. He obtained his PhD in economics in 2009. After having been a teaching assistant at ENSAE and worked for INSEE, he joined CREST-ENSAE as a professor in economics. He is a member of the editorial board of the Review of Economic Studies. In 2019, he obtained the "Malinvaud Prize" for the best article in economics published by a young scholar working in France.