Julien began his career at Universal Music Belgium, before joining DBNR, the management agency of Charlotte de Witte, Oscar and the Wolf, Bazart, Glints etc. In 2021, him and Sébastien Desprez created Magma, a collective, record label and management agency based in Brussels. From concerts to club nights or both combined, Magma puts forward a wide alternative musical spectrum with the ambition to offer a new platform for creative, innovative and eclectic artists. Julien is also a producer and DJ under the name Umbra.