C3S LLC

C3S LLC is a Hungarian satellite platform and subsystem developer headquartered in Budapest, bridging NewSpace innovation with traditional large satellite engineering. The company designs and manufactures 3U–16U CubeSat platforms with integrated tracking and redundant subsystems, high-reliability satellite electronics including electrical power systems, on-board computers, communication systems and antenna systems, power distribution units for large satellite platforms, and payload synchronisation equipment. C3S provides end-to-end mission support from concept through orbit operations, including integration, testing, launch management, and satellite command and control through its Mission Operations Center and UHF/VHF ground station infrastructure.