Sateliot is a Barcelona-based satellite company with one goal: connect everything, everywhere. Learn more: https://sateliot.space/

About The Team & This Role

Sateliot is seeking a talented

NTN Security Research & Development Engineer

to help design and build the next generation of secure communications for IoT, devices, and satellite networks. This role lies at the convergence of cybersecurity, cryptography, and 5G Non-Terrestrial Networks (NTN), supporting the development of secure satellite, device and communication systems. You will contribute to the development of Sateliot’s cybersecurity capabilities for secure satellite systems and cryptographic frameworks, helping to protect end‑to‑end communications, roaming interfaces, and satellite‑to‑ground links. You will be involved across the full development lifecycle, from concept definition and simulation to prototype integration and laboratory validation within the Sateliot constellation and testbed environment.



This is a hands‑on engineering role for someone who enjoys turning advanced security concepts into working prototypes and validated solutions. A key part of your mission will involve the entire lifecycle of research and innovation projects, from the ideation and writing of competitive proposals, to technical leadership and execution of EU and nationally funded R&D; initiatives, including ESA, SNS‑JU, Horizon Europe, and National.

What you’ll do
Research, evaluate, and prototype lightweight and cryptographic mechanisms for 5G NTN Mobile Network.
Design and implement security components and for resource‑constrained devices and higher‑performance platforms
Contribute to the integration of cryptographic solutions into Sateliot’s 5G NTN system and satellite platform for secure end‑to‑end communications and roaming security
Support development of secure application‑layer communications over Sateliot 5G/6G NTN, environment
Implement, test, and validate secure communications across devices, application servers,

📌 NTN Security Research and Development Engineer (Madrid)
🏢 Sateliot
📍 Madrid