Purpose. In modern economic conditions workers, in order to achieve success, tend to build a proactive career. Since there are very few works in the Russian-language literature devoted to career proactivity, it is important to study biographical predictors of career success. The hypothesis of the study. 1. There might exist an invariant, nonspecific for professional areas structure of personal predictors of a successful professional career, which includes special behavioral characteristics of the employee (career potential of the employee). 2. Even in functional hierarchical organizational structures, there are features of the organizational context that facilitate the disclosure of the proactive potential of the employee. Empirical research was conducted on a sample of 301 people. Research methods: 1) developed biographical questionnaire (324 questions), containing scales of success rates, career potential, organizational context; 2) K. Riff psychological well-being scale (adaptation by T. D. Shevelenkova); 3) corporate competence assessment scale. Results. A structural model of the characteristics of a professional career has been developed. Predictors and moderators of subjective and objective career success are highlighted. A structural model of the characteristics of a professional career is built. Predictors and moderators of subjective and objective career success are highlighted. Finding. The relationship of satisfaction with the profession as an integral subjective indicator of career success with indicators of psychological well-being is confirmed. The influence of the employee's career potential and the organizational context of his activity on job satisfaction as an indicator of career success is mediated by mediators. Such mediators are indicators of proactive behavior in career management - orientation to career goals and the level of professional mobility.