Brune started her career at Havas Paris, as a brand strategy consultant for Orange, Orange Business Services, EDF, CCFD Terre Solidaire. In 2010, she became the New business and Marketing Director of Havas Paris. Thus, she managed the competitions carried out by the agency as well as the agency’s reputation internally and externally. She also coordinated the launch of the LVMH Prize, a prize dedicated to young fashion designers. In 2014, she has been appointed as Managing Director of BETC Luxe. She is in charge of several accounts such as AccorHotels, Chaumet, Cheval Blanc, Le Bon Marché & La Grande Épicerie, Fondation Louis Vuitton, LVMH Prize, Yves Saint Laurent Beauté, etc.