WHO ARE WE?
Sateliot is a Barcelona-based startup in the New Space sector, becoming the first satellite telecommunications operator that will provide integral and continuous connectivity to all the elements that will make up the massive Internet of Things (IoT) universe under the 5G protocol. In order to do so, Sateliot is launching a constellation of last generation nanosatellites located at low altitude that act as mobile towers. Sateliot is the perfect complement for large telecommunications companies by providing them with the necessary infrastructure where terrestrial technologies do not arrive.
YOUR MISSION
Sateliot is seeking a Principal Mechanical Engineer to lead mechanical and thermal-structural engineering across the full lifecycle of an advanced LEO satellite platform and payload antenna system. This role requires a deep first-principles approach to mechanical design, combined with hands‐on expertise in developing lightweight, deployable, semi‐rigid space structures that must survive launch loads, deploy reliably in orbit,



and maintain performance through aggressive LEO thermal cycling. The successful candidate will take ownership from early concept and detailed design through manufacturing, qualification, integration, testing, and on‐orbit support.
Your Main Functions
Mechanical Architecture & Structural Leadership
Own the mechanical design of the satellite bus structure and payload antenna assemblies.
Lead architecture decisions using physics‐based first principles reasoning, balancing mass, stiffness, thermal stability, and manufacturability.
Drive structural trade‐offs for LEO‐class spacecraft where volume and mass efficiency are critical.
Deployable & Lightweight Space Structures
Design and qualify deployable mechanisms and semi‐rigid lightweight structures (antenna deployment systems, panels, booms, hinges).
Ensure robust repeatability, stiffness, and dimensional stability after deployment.
Address latch design, hold‐down release mechanisms, toleranc

📌 Principal Mechanical Engineer (Barcelona)
🏢 Sateliot
📍 Barcelona