This bachelor thesis deals with the optimization of production processes taking place in the manufacturing company IAC Group Slovakia. The work includes a presentation of the company and an analysis of the current state of production processes taking place in the company. The theoretical part of the work describes the methods of lean manufacturing, basic concepts associated with the process management of the organization. In the analytical part, the manufacturing company is first introduced and a global analysis of processes is performed. Then a specific production process is analyzed, which will be optimized. The proposed part shows the proposed part of the process and there are evaluated the benefits of the proposed solution