The article is focused on the process of soft skills formation in the participants of the International Qualification School "Modern Pedagogical Technologies in Teaching Russian as a Foreign Language", held annually in Varna (Republic of Bulgaria) for future teachers of Russian language- students from different universities of Europe and Asia. The authors show that soft skills are developed in students of the School during the process of collective preparation of various projects: developing and conducting an excursion, writing a prospectus for a Russian language textbook, creating an educational video, etc. These collective forms of work presuppose self-organisation of students: their ability to find a common language with group members, the promotion of a leader, the ability to work in a team, jointly planning actions and implementing these plans, respecting and supporting each other.