The article is devoted to the problem of increasing the competitiveness of the company by using new management technologies. It is, first of all, the introduction of the concept of lean production in the activities of the enterprise operating in the service sector. This concept is a set of specific methods and technologies aimed at increasing the competitiveness of an enterprise by reducing various kinds of losses, both in the production system and in the consumption system. To increase competitiveness, it is proposed to use non-price methods of competition, namely, increase of consumer value in the process of customer service. Thus, the achievement of a competitive advantage will be achieved through service differentiation. To optimize the activities of the company, the main processes that took place during maintenance were identified, and the most significant ones were selected from the point of view of competitive positions, which should be optimized in the first place. For each process, a value stream was generated, losses and their types were identified, and measures were developed to reduce or eliminate these losses.