In today's increasingly demanding business conditions, human resources management (HRM) has become a strategically important issue for every business entity. Based on increased market demands for increasing efficiency and quality in business, the main goal of the research was to determine the shortcomings and raise awareness of the unused potential of the existing personnel system of a company specialized in engineering work in the field of power engineering and industry. Considering the activity, the employees directly and significantly contribute to the success, efficiency, and profitability of the business with their knowledge. The subject of this paper is the HR system of the observed company. The case study showed that it is a company that thoughtfully invests significant efforts in the development of its employees, so a special research challenge was to detect and improve fragile segments in the HRM system, which is already practically adequate to existing business needs and requirements. Initially, the key settings and effectiveness of the company's existing personnel system were investigated. Furthermore, a framework of recommendations for improvements was drawn up, as a contribution to the improvement of personnel processes and help in securing the best experts in the organization. The quality of the proposed measures and the meaning and justification of the implementation of the advisory model of employee management in real business practice were confirmed in the remaining part of the empirical work. Also, through additional research, it was determined that with certain adjustments, there is a possibility of wider applicability of the measures in other companies of related activities and industries. Nevertheless, the model achieves the greatest adaptability within the company from the case study because it is targeted and conceptually adapted to key procedures and processes that need to be improved. The expected usefulness of the entire recommendation model can only be achieved with meaningful and planned preparation and consistent monitoring of implementation in real practice.