After completing several semesters of studies at the University of Vienna and the College of International Trade, Bosse turned his attention to the stage, enrolling in the Private Theatre School of Otto. He made his debut under the direction of Josef Jarno at the Renaissance Theatre, a partner of the renowned Hansi Niese.
Following engagements in Graz and Brno, Bosse returned to Vienna after World War II and joined the Bürgertheater, where he landed his first major role as Dr. Zögel in the production of "Fiakermilli". He then spent a decade at the Volkstheater, before moving on to the Theater in der Josefstadt and the Kammerspielen.
Throughout his career, Bosse brought a unique, understated yet dignified approach to each performance, showcasing his versatility by taking on roles in the works of Schnitzler and Fry, among others. He also enjoyed success in film, solidifying his reputation as a talented and accomplished actor.
