Julia Langeder was born in Düsseldorf in 1986 and has Austrian-Indonesian roots. After graduating from high school, she studied art history and ancient cultures at Heinrich Heine University in Düsseldorf. She has contributed to several art historical publications and curated her own exhibition on opera and ballet at the Theatermuseum Düsseldorf in 2013.
Since the age of 16, she has appeared as an extra, actress, and chorister on the stages of the Deutsche Oper am Rhein, the Musiktheater im Revier, and the Theater Dortmund. She has taken part in more than 50 productions. Numerous renowned directors have cast her for their productions, including Werner Schroeter, Christof Loy, Stefan Herheim, Philipp Himmelmann, Tatjana Gürbaca and Joan Anton Rechi.
Since the 2018/19 seasons, she has been assistant director and evening director at Deutsche Oper am Rhein and has assisted directors such as Lydia Steier, Lotte de Beer, David Hermann, Axel Köhler, Rolando Villazón and Michael Schulz.