Design and implement high-performance, 3GPP-compliant 5G Core control- and user-plane functions on ARM-based embedded Linux. Develop in C/Go/Rust, use DPDK for packet processing, optimize latency/throughput, debug protocol and performance issues, and collaborate cross-functionally to integrate carrier-grade systems.
We are seeking a Senior Embedded 5GC Software Development Engineer to drive innovation in 5G Core network functions. In this role, you will design and implement high-performance, 3GPP-compliant control-plane and user-plane functionality, focusing on ARM-based architectures. Your expertise will contribute to building robust, carrier-grade systems, ensuring optimal performance and reliability.
Responsibilities
- Develop embedded software for 5G Core network functions, including AMF, SMF, UPF, AUSF, UDM, PCF, and NRF.
- Implement and maintain 5G protocols and procedures, such as NAS, NGAP, PFCP, and GTP-U.
- Design and develop high-performance software using C, Go, and Rust.
- Optimize software for Linux embedded systems on ARM-based platforms.
- Create high-performance packet-processing components with DPDK.
- Enhance system performance for latency, throughput, CPU usage, and memory efficiency.
- Debug complex protocol, system, and performance issues using advanced tools.
- Collaborate with cross-functional teams to ensure seamless integration.
- Stay updated with the latest 5G Core technologies and industry trends.
- Extensive experience in 5G Core architecture and call flows.
- In-depth knowledge of 3GPP procedures, including registration, mobility, and session management.
- Strong programming skills in C, with experience in Go or Rust.
- Proficiency in Linux system programming and embedded Linux development.
- Experience with ARM-based systems and multi-threaded programming.
- Solid understanding of networking fundamentals (TCP/IP, UDP, SCTP, HTTP/2).
- Expertise in packet processing and performance tuning.
- Familiarity with DPDK and its applications.
- Preferred: Experience in implementing 5G Core network functions in production.
- Strong debugging skills using tools like Wireshark, GDB, and tcpdump.
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What you need to know about the Chicago Tech Scene
With vibrant neighborhoods, great food and more affordable housing than either coast, Chicago might be the most liveable major tech hub. It is the birthplace of modern commodities and futures trading, a national hub for logistics and commerce, and home to the American Medical Association and the American Bar Association. This diverse blend of industry influences has helped Chicago emerge as a major player in verticals like fintech, biotechnology, legal tech, e-commerce and logistics technology. It’s also a major hiring center for tech companies on both coasts.
Key Facts About Chicago Tech
- Number of Tech Workers: 245,800; 5.2% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: McDonald’s, John Deere, Boeing, Morningstar
- Key Industries: Artificial intelligence, biotechnology, fintech, software, logistics technology
- Funding Landscape: $2.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Pritzker Group Venture Capital, Arch Venture Partners, MATH Venture Partners, Jump Capital, Hyde Park Venture Partners
- Research Centers and Universities: Northwestern University, University of Chicago, University of Illinois Urbana-Champaign, Illinois Institute of Technology, Argonne National Laboratory, Fermi National Accelerator Laboratory
