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 San Francisco Tech Scene
San Francisco and the surrounding Bay Area attracts more startup funding than any other region in the world. Home to Stanford University and UC Berkeley, leading VC firms and several of the world’s most valuable companies, the Bay Area is the place to go for anyone looking to make it big in the tech industry. That said, San Francisco has a lot to offer beyond technology thanks to a thriving art and music scene, excellent food and a short drive to several of the country’s most beautiful recreational areas.
Key Facts About San Francisco Tech
- Number of Tech Workers: 365,500; 13.9% of overall workforce (2024 CompTIA survey)
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- Funding Landscape: $50.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Sequoia Capital, Andreessen Horowitz, Bessemer Venture Partners, Greylock Partners, Khosla Ventures, Kleiner Perkins
- Research Centers and Universities: Stanford University; University of California, Berkeley; University of San Francisco; Santa Clara University; Ames Research Center; Center for AI Safety; California Institute for Regenerative Medicine
