The present thesis was born as part of a joint project between the CubeSat Teamof Politecnico di Torino and the European Space Agency (ESA). The objective of this collaboration is to design a Cubesat platform able to perform several typologies of tests on miniaturized electric propulsion systems. By means of these tests, it is intended to study the effects of electric propulsion systems within a host platform and to increase their Technology Readiness Level (TRL). Specifically, this thesis deals with the first phases of software development, integration and tests for the above mentioned platform. A standard approach has been used during the whole project, such to make the customer-supplier relationship as clear and effective as possible.