In a dangerous environment in which human life can be endangered, robots are often used instead. In the upcoming Mars missions such robot, capable of traversing demanding terrain, repairing and operating mission equipment, assisting the astronauts or conducting research, can prove crucial for a successful outcome. Before planning any mission it is important to evaluate various solutions in order to choose the most reliable one. In order to satisfy this requirement, various rover competitions are being organised for students or professionals to participate in. The poster presents our solution for developing software of a rover which we are preparing for one of such competitions. It describes the system’s architecture, means of communication between various modules as well as with the operator and the way the autonomous mode is implemented. Our solutions and concepts may one day become an inspiration for engineers working on real rovers designed to operate on other planets.