Julien graduated from the French business school HEC Paris in 2015. He also received a DJCE (Diplôme de Juriste Conseil d'Entreprise, with honors) and a Master’s degree in Business Law (Master 2 Droit des Affaires, with honors) in 2014 (University of Rennes).
He is a member of the Paris Bar. His native language is French and he is fluent in English.