Matthias has been the Socialist Member of Parliament for the Lot-et-Garonne since 2012
He has also been Regional Councilor for Aquitaine since 2010 and an Administrative Judge since 2005.
In the National Assembly, he is a member of the Committee on Constitutional Laws, Legislation, and General Administration of France. He works particularly on issues related to the modernization of the State and the transparency of public life. On May 14, 2012, he submitted a report on immigration to Prime Minister Jean-Marc Ayrault, following a mission entrusted to him by Interior Minister Manuel Valls.
Matthias was born in Germany. His father is a German university professor and his mother is a French teacher. He grew up in Berlin before coming to study in Paris (Sciences Po Paris, Ecole Normale Supérieure, Ecole Nationale d’Administration).
From 2010 to 2011, he was Director of the office of Jean-Pierre Bel (President of a socialist group at the Senate) and then became his Special Adviser when Bel became Chairman of the Senate.
He has published several books, including his 2010 book with Mr. Wladimir d’Ormesson, In 2027, Two Young Elected Confront Their Vision of France (2027, Deux Jeunes Elus Confrontent Leur Vision de la France).