After graduating from high school,Bertrand Brieenrolled in a dual degree program in modern literature and social sciences at Sciences Po and the Sorbonne Faculty of Arts. A little later, he began a master's degree in cultural policy and administration at Sciences Po. He also studied for a master's degree in theater studies at Paris-Nanterre University.
Alongside his student activities, Bertrand organized a student theater festival and also wrote a number of articles for the Sciences Po Arts Office webzine, which allowed him to become an avid and curious theatergoer.
Taking advantage of a gap year, he worked for a year in the public relations and communications department of the Théâtre National de la Colline until July 2018, before resuming his studies and joining the association Os in January 2019, after completing his higher education. He worked at Os until March 2022, coordinating related activities.
He became a bookseller, working at Monte-en-l'air and Pied à terre in Paris before joining the BnF bookshops for two years. At the same time, he carried out a number of freelance assignments for cultural institutions and companies, and wrote educational files for the association Os. He began training to become a chef in September 2025.
