Senior Software Engineer, 5G Physical Layer

<div>Ready to make connectivity from space universally accessible, secure and actionable? Then you’ve come to the right place! </div><div>&nbsp;</div><div>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.</div><div>&nbsp;</div><div>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.</div><div>&nbsp;</div><div>We’re intentional, we’re unapologetically curious and we’re 100% committed to saving space, protecting our planet and turning connectivity into actionable intelligence.</div><div><br></div><div>As a <strong>Senior Software Engineer focused on the 5G Physical Layer</strong>, you will lead the design, implementation, optimization, and integration of <strong>5G NR PHY software</strong> for <strong>3GPP Release 15/16/17 and beyond-5G</strong> systems. Your work will focus on real-time, performance-critical PHY algorithms running on processor- and accelerator-based platforms, with close interaction with RF, DSP, and hardware teams.</div> <div>This role emphasizes <strong>PHY algorithm implementation, real-time constraints, and RF/SoC integration</strong>, while supporting higher-layer interfaces as needed. The position is based in <strong>Duisburg, Germany</strong>.</div><br><strong>What you will do</strong><br> <li><strong>5G PHY Software Design and Implementation</strong></li> <li>Design, implement, and optimize 5G NR PHY algorithms on processor-based and heterogeneous SoC platforms</li> <li>Develop software for key PHY functions such as modulation/demodulation, channel estimation, equalization, synchronization, coding/decoding, and HARQ support</li> <li>Implement PHY software compliant with 3GPP Rel 15/16/17 specifications</li> <div>&nbsp;</div> <li><strong>Hardware, RF, and Platform Integration</strong></li> <li>Integrate 5G PHY software with RF front-end hardware and digital baseband chains</li> <li>Develop and maintain hardware control software using interfaces such as I2C and SPI</li> <li>Work with complex SoC architectures, including ARM, DSPs, and hardware accelerators</li> <li>Develop software interfaces toward embedded accelerators and DSP blocks</li> <div>&nbsp;</div> <li><strong>Real-Time and Embedded Systems</strong></li> <li>Design software within strict real-time constraints and low-latency requirements</li> <li>Develop on embedded Linux, DSP operating systems, and lightweight RTOS such as FreeRTOS and Zephyr</li> <li>Optimize performance, memory usage, and throughput of PHY software components</li> <div>&nbsp;</div> <li><strong>Verification, Testing, and Debug</strong></li> <li>Create and execute PHY-level test cases and validation scenarios</li> <li>Generate, analyze, and verify PHY test vectors and waveforms</li> <li>Verify PHY functionality using 5G test equipment (e.g., R&amp;S, Agilent) and commercial UEs</li> <li>Debug complex PHY, timing, RF, and performance issues across software and hardware boundaries</li> <div>&nbsp;</div> <li><strong>Technical Leadership and Delivery</strong></li> <li>Provide effort estimation and technical input for PHY software development tasks</li> <li>Support customer requests related to 5G PHY features and performance</li> <li>Document PHY designs, implementations, and results in Confluence or equivalent systems</li> <div>&nbsp;</div> <li><strong>Collaboration and Ways of Working</strong></li> <li>Collaborate with RF, systems, hardware, and protocol stack teams to ensure clean PHY-MAC interfaces</li> <li>Work effectively in a global, distributed team across Europe, India, and the U.S.</li> <li>Follow SCRUM / Agile and Continuous Integration development practices</li> <li>Operate autonomously while maintaining strong technical communication</li> <br><strong>What you bring to this role</strong><br> <li>Master of Science or Master of Engineering degree in Electrical Engineering, Communications Engineering, or equivalent</li> <li>Significant professional experience as an embedded C and C/C++ software engineer</li> <li>Strong background in 5G NR PHY and digital communications theory</li> <li>Experience working with SDR platforms and SoC architectures</li> <li>Working knowledge of MATLAB and Python for PHY algorithm development and analysis</li> <li>Strong understanding of real-time embedded software constraints</li> <li>Excellent problem-solving, time management, and communication skills</li> <br><strong>Bonus Points</strong><br> <li>Deep understanding of 3GPP 5G NR PHY specifications (Rel 15/16/17+)</li> <li>Experience with Non-Terrestrial Networks (NTN) and satellite communications</li> <li>Experience implementing PHY algorithms on DSPs and hardware accelerators</li> <li>Strong understanding of link budgets, channel models, and RF impairments</li> <li>Experience with waveform generation, PHY simulation, and lab bring-up</li> <br><strong>Additional Requirements</strong><br><div>This is a fast-paced, high-impact environment - flexibility to occasionally work extended hours or weekends during critical periods is expected.</div><div>At E-Space, you’ll work on cutting-edge PHY software that sits at the heart of next-generation wireless and satellite communication systems. We offer a collaborative environment, competitive compensation, and opportunities to make a real technical impact on global connectivity.</div><div><br></div><div><b style="font-size: 18px;">Why E-Space is right for you:</b></div><div><br></div><div>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:</div><div><br></div><div>• An opportunity to really make a difference</div><div>• Sustainability at our core</div><div>• Fair and honest workplace</div><div>• Innovative thinking is encouraged</div><div>• Competitive salaries</div><div>• Continuous learning and development</div><div>• Health and wellness care options</div><div>• Financial solutions for the future </div><p>Find more <a href="https://www.arbeitnow.com/english-speaking-jobs">English Speaking Jobs in Germany</a> on Arbeitnow</a>