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Senior Software Engineer, 5G Protocol Stack en Espace

Espace · Duisburg, Alemania · On-site

Python

C++

C#

Software Engineer

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Description

Ready to make connectivity from space universally accessible, secure and actionable? Then you’ve come to the right place!
 
E-Space is bridging Earth and space to enable hyper-scaled deployments of space-powered Internet of Things (IoT) solutions and services. We are fundamentally changing the design, economics, manufacturing, coverage limitations and service delivery associated with traditional satellite and terrestrial IoT systems.
 
By building a highly-advanced low Earth orbit (LEO) space system—with a unique antenna design, highly sustainable spacecraft system and low-cost, small portable end-user devices—we can extend global satellite coverage, capacity and connectivity beyond legacy space services to provide a new kind of IoT platform that lets users sense, track, connect and act on information gathered, anywhere.
 
We’re intentional, we’re unapologetically curious and we’re 100% committed to saving space, protecting our planet and turning connectivity into actionable intelligence.

As a Senior Software Engineer, 5G Protocol Stack, you will design, develop, integrate, and validate UE and gNB protocol stack software for 5G NR and/or LTE systems. You will work across one or more 3GPP protocol layers and collaborate closely with PHY, RF, and Core Network teams to deliver production-quality embedded software.
This role requires strong expertise in C/C++ development, POSIX environments, Linux-based embedded systems, and deep familiarity with 3GPP protocols. You will take ownership of complex software components and contribute to system-level integration and testing. This position is based in Duisburg, Germany.

What you will do

  • Protocol Stack Development
  • Design, implement, and maintain UE and gNB protocol stack components for 5G NR and/or LTE
  • Work in one or more protocol layers, including MAC, RLC, PDCP, RRC, NAS, Ng/S1, Xn/X2, and GTP-U
  • Develop high-quality, maintainable C/C++ (POSIX-compliant) software

  • Integration and Embedded Systems
  • Integrate protocol stack components with the PHY layer and core network interfaces
  • Perform embedded development and porting on embedded Linux, FreeRTOS, or Zephyr platforms
  • Support system bring-up and end-to-end integration activities

  • Verification, Testing, and Debug
  • Develop and execute test cases for individual components and integrated subsystems
  • Debug complex protocol, timing, and interoperability issues
  • Verify functionality using test equipment and simulators such as Keysight, Amarisoft UE/gNB/eNB, or TM500

  • Tooling, Build, and Workflow
  • Work in Linux-based development environments
  • Use and maintain build systems such as CMake, Make, or SCons
  • Develop supporting scripts using bash or Python
  • Participate in code reviews and continuous integration workflows

  • Collaboration and Ways of Working
  • Collaborate with cross-functional and geographically distributed engineering teams
  • Provide effort estimates and technical input for planning and execution
  • Document designs, implementations, and test results clearly and consistently

    • What you bring to this role

  • Strong professional experience in C/C++ software development within POSIX environments
  • Hands-on experience with 3GPP 5G NR and/or LTE protocol stacks
  • Experience with embedded development on embedded Linux, FreeRTOS, or Zephyr
  • Solid Linux development, debugging, and performance analysis skills
  • Working knowledge of at least one scripting language (bash or Python)
  • Familiarity with modern build systems (CMake, Make, SCons)
  • Strong problem-solving skills and ability to work independently

    • Bonus Points

  • Experience with C# / .NET
  • Hands-on experience with test equipment (Keysight, Amarisoft UE/gNB/eNB, TM500)
  • Experience integrating protocol stacks with RF hardware
  • Familiarity with CI/CD pipelines and Agile / SCRUM development
  • Experience with Non-Terrestrial Networks (NTN) or satellite communications

    • Additional Information

    At E-Space, you’ll work on cutting-edge wireless and satellite technologies that redefine global connectivity. We offer a collaborative environment, competitive compensation, and opportunities to grow technically while making a meaningful impact.

    Why E-Space is right for you:

    We want you to make the most of your journey at E-Space. That’s why we support and invest in the physical, emotional and financial well-being of our team members and their families. Some of what you can expect when working at E-Space:

    • An opportunity to really make a difference
    • Sustainability at our core
    • Fair and honest workplace
    • Innovative thinking is encouraged
    • Competitive salaries
    • Continuous learning and development
    • Health and wellness care options
    • Financial solutions for the future
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