The monograph is devoted to the professionalization of the middle level of the central administrative apparatus in the Habsburg monarchy in the second half of the 18th century. departmental protocols with decisions on personnel issues, private correspondence and other sources, and the most typical ranks of nobody's careers are reconstructed, opportunities and boundaries of horizontal and social mobility are investigated, the role of the patron of client relations, a collective portrait of a multi-ethnic and multilingual professional group is being recreated, which ensured the implementation of reforms of enlightened absolutism.