Involved in the dance and theatre scenes for over a dozen years, Guillaume alternately works as a stage technician, stage manager, technical manager and production manager, both during production creation and when on tour, but his main focus is lighting design. He has been a member of the creative teams of several companies, such as the Théâtre La Catapulte, the Cie Vox Théâtre, the Théâtre de la Vieille 17, the National Arts Centre’s Théâtre Français, the Théâtre la Tangente, and the Théâtre du Nouvel Ontario.
Moreover, he traveled to Rwanda in October of 2009 to work as the stage manager for Goodness, a production of Toronto’s Volcano Theatre and he occasionally works with José Navas/Compagnie Flak, as director/stage manager. He was given an excellence award in 2007 by the Fondation pour l’avancement du théâtre francophone au Canada, and was also given the Lighting Design of the Year award at Ottawa’s Les Prix Rideau Awards. For the Théâtre la Tangente, Guillaume designed the lighting for Requiem pour un trompettiste,Comment on dit ça « t’es mort » en anglais ? and L’Implorante.