The thesis deals with design of configuration software, ConfPix, for radiationdetecting sensor - SpacePix2. It describesdesign and implementation, as well as thetesting procedure. The software is implemented in Python, with Graphical UserInterface created using the Tkinter module for Python. The application is designed as versatile and can be used in future missions requiring the configurationof pixel radiation detectors from SpacePixfamily. The SpacePix2 sensor is a new technology developed at the Faculty of Nuclear Sciences and Physical Engineeringat Czech Technical University in Pragueand will be tested in orbit as a part of theSpace Dosimetry System Demonstrator instrument developed by the esc Aerospaces.r.o. company. Cosmic radiation sources and radiation detectors are described in the theoretical part of the thesis. The SpaceDosimetry System Demonstrator instrument, SpacePix Radiation Monitor detector and the SpacePix2 sensor are described as well.