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 DevelopmentDesign, implement, and maintain UE and gNB protocol stack components for 5G NR and/or LTEWork in one or more protocol layers, including MAC, RLC, PDCP, RRC, NAS, Ng/S1, Xn/X2, and GTP-UDevelop high-quality, maintainable C/C++ (POSIX-compliant) software
Integration and Embedded SystemsIntegrate protocol stack components with the PHY layer and core network interfacesPerform embedded development and porting on embedded Linux, FreeRTOS, or Zephyr platformsSupport system bring-up and end-to-end integration activities
Verification, Testing, and DebugDevelop and execute test cases for individual components and integrated subsystemsDebug complex protocol, timing, and interoperability issuesVerify functionality using test equipment and simulators such as Keysight, Amarisoft UE/gNB/eNB, or TM500
Tooling, Build, and WorkflowWork in Linux-based development environmentsUse and maintain build systems such as CMake, Make, or SConsDevelop supporting scripts using bash or PythonParticipate in code reviews and continuous integration workflows
Collaboration and Ways of WorkingCollaborate with cross-functional and geographically distributed engineering teamsProvide effort estimates and technical input for planning and executionDocument designs, implementations, and test results clearly and consistently
What you bring to this role
Strong professional experience in C/C++ software development within POSIX environmentsHands-on experience with 3GPP 5G NR and/or LTE protocol stacksExperience with embedded development on embedded Linux, FreeRTOS, or ZephyrSolid Linux development, debugging, and performance analysis skillsWorking 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# / .NETHands-on experience with test equipment (Keysight, Amarisoft UE/gNB/eNB, TM500)Experience integrating protocol stacks with RF hardwareFamiliarity with CI/CD pipelines and Agile / SCRUM developmentExperience with Non-Terrestrial Networks (NTN) or satellite communications
