The article investigates problems of digitalization and digital transformation of human resource management at modern organization. Authors suggest implementing approach based on the methodology of digital maturity and adapting it to tasks of human resource departments: the article includes the description of stages of digital maturity of human resource management and steps of its digital transformation of this managerial function. The Forth Industrial Revolution impacts on human capital strongly: its structure is dramatically changing and “talents” begin playing leading role at business companies. In new conditions a special attention is paid to knowledge management as a key function of human resource management. One of problems in knowledge management is to find out talented staff and create conditions for full integration their intellectual potential in production and business processes. Digital transformation of human resource management creates a new possibility for “talents” detection and improvement of their motivation. The authors suggest applying the instrument of knowledge mapping and demonstrate practical examples of its usage at companies. The described approach is especially useful for scientific and research organizations.