Object of research: the process of personnel management in engineering enterprises, the purpose of: deepening theoretical and practical principles and development guidelines for the socio-economic efficiency of personnel management in engineering enterprises, research methods and instruments: the structural and logical analysis, statistical analysis, graphical representation; questionnaires; factor analysis; cluster analysis, synthesis, method of analytical evaluation of general indicators, theoretical and practical results: a list of the components of socio-economic efficiency of personnel management, which, unlike existing ones, include: the state personnel policies of the enterprise, formation and use of intellectual and social capital structure factors that characterize the effectiveness of personnel management through the use of multivariate factor analysis, which, unlike existing ones, including: personnel policies, intellectual and social capital, organizational culture and staff attitudes to work, a methodical approach to determining the level of socio-economic efficiency personnel management, which, unlike existing based on the calculation of integral index, comprising indicators characterizing the state personnel policy, formation and use of intellectual and social capital, scientific and theoretical interpretation of the concept of "socio-economic efficiency of personnel management, which In contrast to existing ones, is considered on the basis of an integrated approach and determined by the state personnel policy, the intellectual development of employees, their effective interaction aimed at building social capital, identifying the stages of development staff in the context of socio-economic efficiency of personnel management, which, unlike consists essentially in the disclosure of the purposes of development, choice of methods for development and calculate the values of indicators describing the accumulation of intellectual and social capital, resulting in the development of employees, the degree of implementation: The design put into practice the State Scientific-Production Enterprise «Experimental Machine-Building Plant of mining and processing equipment salt industry», OOO NPP «ES Polymer»; scope of use: personnel management of engineering enterprises.