After working with several cultural organisations and film festivals, Arnaud Dumatin became general administrator of the Festival La Rochelle Cinéma in 2009. Since 2018, he has been co-general manager. He also teaches at the University of Paris-VIII, is involved in various networks and regularly sits on festival juries. Dumatin is also a singer-songwriter and performing artist with the group Institut, whose new album will be released in 2025.