Senior Software Engineer – 5G NTN RAN (L2/L3)

Apply Now

About Aerospacelab

Our mission is supported by an ambitious vertically integrated approach: design & manufacture of small satellites combined with development of earth observation services.

Since its creation in 2018, the company has already grown substantially. Our team gathers more than 25 engineering expertise, from hardware design to software development & data science.

In 2025, Aerospacelab counts offices in Louvain-la-Neuve (Belgium), Toulouse (France), Lausanne (Switzerland) and US West Coast with more than 350 full-time employees, with the ambition to position itself as the European leader in small satellites.

Your Mission

We are building the future of 5G connectivity in space. As part of Aerospacelab, you will design, implement, and deploy 5G protocol stack components tailored for Non-Terrestrial Networks. Your work will directly contribute to enabling reliable, high-performance wireless communication over satellite links.

You are a self-driven, adaptable engineer who thrives in a collaborative environment. You’re curious by nature, eager to explore new technologies and development methods, and comfortable stepping into uncharted technical territory.

Duties

Design, implement and validate 5G NR NTN gNB L2/L3 features in line with 3GPP specifications
Develop Aerospacelab-specific enhancements to optimize performance and reliability
Actively contribute to architecture, design and code review of the gNB software stack
Build performance tests, unit tests, logging, and support infrastructure to ensure software quality
Collaborate with system architects, hardware engineers, and test teams to ensure robust and scalable NTN solutions
Analyze and contribute to the evolution of 3GPP standards

Must have

Proven experience in 5G stack development, especially L2/L3 layers
Deep understanding of 3GPP 5G NR specifications
Strong software engineering skills in C/C++ or Rust, architecture and debugging
Experience with DPDK for high-throughput data processing
Practical experience with embedded systems or performance-critical networking software
Strong analytical and troubleshooting skills for low-level performance bottlenecks
Autonomous, analytical mindset with a drive to deliver impactful solutions