Sateliot is a Barcelona-based satellite company with one goal: connect everything, everywhere. Founded in 2018, we’ve built the first satellite constellation that lets standard commercial devices communicate directly from space. Our technology bridges the gaps that terrestrial networks will never reach, bringing affordable and secure connectivity to industries, governments, and communities across the planet.
Learn more: https://sateliot.space/
About The Team & This Role
Sateliot brings standard cellular connectivity from space, and develops key parts of its radio access technology in-house, test tooling included. Non-terrestrial networks are one of the most active areas in telecoms right now, and this is a chance to work on the radio itself rather than on top of it. As Junior RAN Software Engineer you will work on our 5G NR non-terrestrial test terminal side by side with a senior engineer who reviews what you write, and you will own the test and validation pipeline around it. The role is deliberately designed as an entry path into radio access software:



we are looking for someone early in their career who is fast with AI-assisted development and rigorous about understanding what they ship.
What you’ll do
- Build and extend our own 5G NR NTN test terminal software, paired with our 5G stack architect as your reviewer.
- Own its test and validation pipeline: automation, continuous integration, regression runs and the analysis of what the results mean.
- Drive integration step by step — terrestrial first, then satellite GEO and LEO over a software channel emulator, then over RF with a physical emulator.
- Work AI-first: orchestrate AI-assisted development, and be able to explain and defend every line that ships.
- Grow into the domain: this position is the path to becoming a radio access software engineer, with the mentoring to get there.

What you bring
- A degree in telecommunications, electronics or computer engineering, with solid C or C++ and Python for tooling.
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📌 Junior RAN Software Engineer, 5G NR NTN Test Terminal (Barcelona)
🏢 Sateliot
📍 Barcelona