Matthieu Riff has extensive experience in public administration and legal affairs, currently serving as a parliamentary collaborator for Senator Jean-François Husson in the French Senate since September 2024. Since March 2014, Matthieu has also been a delegated municipal counselor in Essey-lès-Nancy, actively involved in various commissions and committees. Prior roles include Chargé de mission for the Département de Meurthe-et-Moselle, and Director of Cabinet for Mayor André Santini in Issy-les-Moulineaux, where Matthieu managed mayoral communications and legal oversight. Matthieu has contributed to academia as a university lecturer and holds a Master's degree in Public Contract Law.