Guillaume joined BLG as a law student in 2021 upon completion of his civil law degree at the Université de Montréal.
During his studies, Guillaume had the opportunity to gain legal experience by working as a law student in another firm and by completing a clerkship at the Superior Court of Quebec. Guillaume also took part in a summer exchange in international law at the Universidad de Costa Rica.
In addition, Guillaume has been very involved in his student community throughout his studies. He held several positions on various committees and was vice-president of career development for his student association during his last year. He is also a member of the executive committee of the Canadian Bar Association's student section.