Didier Hamon was Deputy State Prosecutor firstly for Val d’Oise and then for Hauts de Seine.
He was General Secretary of the École Nationale Supérieure de Création Industrielle, and Programme Director for the Bicentenary of the French Revolution.
He was senior lecturer at the IEP in Paris for eight years, and an associate professor at the University of Versailles.
After five years of ministerial office (principal secretary and advisor to Jack Lang, then Jean-Louis Bianco). Didier Hamon joined Aéroports de Paris in 1993 as the Communications Director, the Company spokesperson.
In 2003, he became the Director for Environment and Sustainable development. Since May 2013, he has been General Secretary of Groupe ADP
Didier Hamon is an Officer of the Legion of Honour.