After working as administrator for a theater company in Strasbourg, Stéphane Krasniewski joined the SUDS team in ARLES in 2004, first as administrator and then as co-programmer alongside Marie José Justamond, the festival's founder. He became the festival's director in January 2019. He has also been president of the Syndicat des Musiques Actuelles since 2024, after having been president of the Réseau Zone Franche from 2018 to 2022.