About this opportunity
Aerospacelab, Inc. lists this Senior Software Engineer – 5G NTN RAN (L2/L3) opportunity in town of belgium, Wisconsin. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Senior Software Engineer – 5G NTN RAN (L2/L3)
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
Nice to Have
Experience in embedded software development or software architecture
Hands-on experience with open-source 5G stacks (e.g., OpenAirInterface, srsRAN)
Familiarity with 5G NTN concepts and satellite communications
Experience in 5G PHY development
What we offer
Build your own career path
Direct impact on the growth of the company
Fast-paced environment
Flexible ways of working
Salary package consistent with your experience
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Who can apply
Review the original listing for work authorization, qualifications and employer requirements.