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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 focused on the 5G Physical Layer, you will lead the design, implementation, optimization, and integration of 5G NR PHY software for 3GPP Release 15/16/17 and beyond-5G 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. This role emphasizes PHY algorithm implementation, real-time constraints, and RF/SoC integration, while supporting higher-layer interfaces as needed. The position is based in Duisburg, Germany. What you will do 5G PHY Software Design and Implementation Design, implement, and optimize 5G NR PHY algorithms on processor-based and heterogeneous SoC platforms Develop software for key PHY functions such as modulation/demodulation, channel estimation, equalization, synchronization, coding/decoding, and HARQ support Implement PHY software compliant with 3GPP Rel 15/16/17 specifications   Hardware, RF, and Platform Integration Integrate 5G PHY software with RF front-end hardware and digital baseband chains Develop and maintain hardware control software using interfaces such as I2C and SPI Work with complex SoC architectures, including ARM, DSPs, and hardware accelerators Develop software interfaces toward embedded accelerators and DSP blocks   Real-Time and Embedded Systems Design software within strict real-time constraints and low-latency requirements Develop on embedded Linux, DSP operating systems, and lightweight RTOS such as FreeRTOS and Zephyr Optimize performance, memory usage, and throughput of PHY software components   Verification, Testing, and Debug Create and execute PHY-level test cases and validation scenarios Generate, analyze, and verify PHY test vectors and waveforms Verify PHY functionality using 5G test equipment (e.g., R&S, Agilent) and commercial UEs Debug complex PHY, timing, RF, and performance issues across software and hardware boundaries   Technical Leadership and Delivery Provide effort estimation and technical input for PHY software development tasks Support customer requests related to 5G PHY features and performance Document PHY designs, implementations, and results in Confluence or equivalent systems   Collaboration and Ways of Working Collaborate with RF, systems, hardware, and protocol stack teams to ensure clean PHY-MAC interfaces Work effectively in a global, distributed team across Europe, India, and the U.S. Follow SCRUM / Agile and Continuous Integration development practices Operate autonomously while maintaining strong technical communication What you bring to this role Master of Science or Master of Engineering degree in Electrical Engineering, Communications Engineering, or equivalent Significant professional experience as an embedded C and C/C++ software engineer Strong background in 5G NR PHY and digital communications theory Experience working with SDR platforms and SoC architectures Working knowledge of MATLAB and Python for PHY algorithm development and analysis Strong understanding of real-time embedded software constraints Excellent problem-solving, time management, and communication skills Bonus Points Deep understanding of 3GPP 5G NR PHY specifications (Rel 15/16/17+) Experience with Non-Terrestrial Networks (NTN) and satellite communications Experience implementing PHY algorithms on DSPs and hardware accelerators Strong understanding of link budgets, channel models, and RF impairments Experience with waveform generation, PHY simulation, and lab bring-up Additional Requirements This is a fast-paced, high-impact environment - flexibility to occasionally work extended hours or weekends during critical periods is expected.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. 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