The State Atomic Energy Corporation ‘Rosatom’, a diversified holding company combining assets in power engineering, mechanical engineering, and construction, is chosen as the research object in this paper. The subject area chosen is the seamless adaptation of technical university graduates during their employment at the enterprises of Rosatom State Corporation. It is the supraprofessional competences of university graduates that are becoming more and more demanded by employers in the current realities, in the environment of constant changes and tougher requirements from the external macro-environment, in the conditions of continuous education. The aim of the study is to develop a theoretical and methodological basis of the supraprofessional competencies formation, which play a key role in creating a personnel reserve for such high-tech industries as nuclear power engineering. The main methods used in writing the article are analysis, synthesis, as well as theoretical analysis of scientific literature on the research problem and local documentation of Rosatom State Corporation and VETI MEPhI in terms of their interaction on the graduate employment issues. The main result of the study is the conclusion that it is necessary to introduce modern approaches to student education in technical universities and personnel development which will create a powerful pool of qualified specialists capable of solving complex problems in a dynamically changing technological landscape. These competencies go beyond specific subject knowledge and encompass a set of skills, abilities and qualities that are essential for success in further activities as trained specialists, allowing individuals who have mastered supraprofessional competencies to compete in the labor market.