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

Aerospacelab, Inc.; Town of Belgium (WI); On-site; USD 70,000 - 90,000; Full time

Benefits offered by this job

Flexible ways of working

Direct impact on company growth

Career path development

Job summary

Aerospacelab, Inc. is seeking a Junior Software Engineer to design and implement 5G protocol stack components for Non-Terrestrial Networks. You will work on enhancing high-performance wireless communications and collaborate with senior engineers.

The ideal candidate will have experience in telecommunications and software engineering as well as programming skills in C/C++ or Rust. The environment is fast-paced, offering flexible working options and a salary commensurate with experience.

Qualifications

• Experience in telecommunications, embedded systems, or software engineering.
• Understanding of 3GPP 5G specifications and protocol stack concepts.
• Eagerness to learn and collaborate with teams.

Responsibilities

• Design, implement and validate 5G NR NTN gNB L2/L3 features.
• Develop Aerospacelab-specific enhancements for performance.
• Build tests and support infrastructure for software quality.

Skills

Programming skills in C/C++ or Rust

Problem-solving skills

Familiarity with 3GPP 5G specifications

Education

Academic or practical experience in telecommunications or embedded systems

Tools

DPDK

Job description

Junior 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. You will work alongside experienced engineers to help bring high-performance wireless communication over satellite links to life.

You are a curious and motivated engineer, eager to learn and grow in a fast-paced, collaborative environment. You’re excited by the challenge of working on deep-tech systems and passionate about seeing your contributions have real-world impact.

Duties

• Design, implement and validate 5G NR NTN gNB L2/L3 features according to 3GPP specifications
• Develop Aerospacelab-specific enhancements
• Build performance tests, unit tests, logging, and support infrastructure to ensure software quality
• Deploy and validate software in lab and field environments, including satellite link emulation and hardware-in-the-loop systems

Must have

• Academic or practical experience in telecommunications, embedded systems, or software engineering
• Familiarity with 3GPP 5G specifications and protocol stack concepts
• Programming skills in C/C++ or Rust
• Eagerness to learn, strong problem-solving skills, and a collaborative mindset

Nice to Have

• Experience with DPDK for high-throughput data processing
• Experience in embedded software development
• Ability to analyze and troubleshoot low-level system performance bottlenecks
• Exposure to 5G stack development
• Interest in satellite communications and NTN systems

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