The dual education system is one of the world-recognized models of training qualified staff. Due to consolidation of resources of all participants in this process, training of qualified staff meeting requirements of the employers is ensured. In terms of implementation of the dual education system, the task of providing production training of the trainee by a qualified mentor is becoming particularly relevant. The study is based on the use of methods of theoretical analysis, systematization, consolidation of scientific and educational literature on the subject of research and modeling. These methods have been used in different combinations at different stages of the study, depending on the tasks being solved, what, no doubt, has contributed to ensuring reliability of the study performed and validity of the conclusions made by the author. In the course of the study, a differentiated intrafirm qualification has been justified, component-wise characteristics of the levels of the mentor's psychological-pedagogical competence developed for implementation of mentorship in the dual education system. The presented component-wise characteristic serves as a criterion to determine qualification and level of formation of psychological and pedagogical competence of the mentor of production training and enables building an individual trajectory of its development. The main results of the study have been reported and discussed at scientific and practical conferences of international, all-Russian and regional levels. The psychological and pedagogical competence of the mentor (motivational-value-based, process-activity, cognitive and reflexive-analytical components) that can be formed on either level: high, medium and sufficient, is the basis of corporate qualification of mentors (mentor, tutor, coach and facilitator).