The company Tesla sistemi, the leading system integrator in Serbia, follows its basic business concept, so that the user has a complete service, from the development of the conceptual solution, through design to construction and maintenance. Special attention is paid to the maintenance of already installed systems. Tesla sistemi do not achieve their development by using subcontractors, but we strive for our workers to do the complete work. Fast response, trained staff, experienced engineers and availability to the user all 365 days of the year contribute to this. By introducing modern ways of doing business, we have achieved great references and business in a short time. By regularly sending staff for professional development and education, it contributes to keeping up with equipment and technology that is developing at an incredible speed. We are present at a large number of seminars and courses both in Serbia and abroad. In order to meet the needs of customers who have less demanding requests, and are not located in Belgrade, we have trained our associates in all cities in Serbia, so that they can do the work for us. Tesla sistemi also works as subcontractors of other companies, because we have a complete infrastructure to do work of any size.