After earning her master’s degree in human geography at the University of Geneva, Céline Gaudier worked at the Théâtre de Vidy-Lausanne as a tour administrator, notably on shows by Heiner Goebbels (Eraritjaritjaka, Max Black, I went to the house but did not enter), Joël Jouanneau and Jeanne Moreau.

Since 2005, she has worked as an assistant director in opera and theater to Ludovic Lagarde, Anne-Cécile Vandalem, Cyril Teste, Éric Ruf, Pauline Bayle, Mikaël Serre, Jacques Vincey, Philippe Quesne and Vincent Huguet, as well as Dan Jemmett, Christophe Rauck, André Engel and Gian Manuel Rau.

She worked at the Opéra Comique on La voix humaine, Tales of the Wave Moon After the Rain, Le timbre d’argent, Hamlet, L’Orfeo, Fidelio and Roméo et Juliette.