12G Flight Systems
Space systems software engineering, ECSS/CCSDS training, and independent reviews for aerospace projects
12G Flight Systems Sweden AB, based in Västerås, Sweden, provides software engineering, training, and independent reviews for space and aerospace projects. The core offering is PUSopen, a flight-proven commercial library implementing ECSS PUS and CCSDS protocols for on-board and ground communication. The library was used in the EPFL CubeSat mission CHESS, where it handled space-to-ground communication. Beyond the software stack, the company delivers training on ECSS PUS-C and CCSDS protocols, software quality assurance under ECSS-Q-ST-80C, avionics software support under ECSS-E-ST-40C, and technical documentation across the full software lifecycle. Clients have included the European Space Agency, Unibap, and GoSpace Tech. The company was founded in 2018 by Slavomir Petrik and operates as a small specialist consultancy.