Senior Embedded 5GC Software Development Engineer

JobCubby; Plano, Northern (TX, KY); Hybrid; USD 150,000 - 230,000; Full time

Job summary

JobCubby is seeking a Senior Embedded 5GC Software Development Engineer to drive 5G Core innovations. You will design and implement high-performance control-plane and user-plane software for ARM-based embedded Linux, focusing on AMF/SMF/UPF components and 5G protocol stacks.

The role emphasizes optimizing latency, throughput, and memory efficiency, with scope across NAS, PFCP, GTP-U, and DPDK-powered packet processing.

Qualifications

• 5G Core architecture and call flows expertise.
• Proficiency in C; Go or Rust experience.
• Linux system programming and embedded Linux development.
• ARM-based systems and multi-threaded programming.
• Solid understanding of TCP/IP, UDP, SCTP, HTTP/2.

Responsibilities

• Develop embedded software for 5G Core network functions.
• Implement NAS, NGAP, PFCP, and GTP-U protocols.
• Design high-performance software for ARM-based Linux.
• Create packet-processing components with DPDK.
• Debug protocol, system, and performance issues.
• Collaborate with cross-functional teams to ensure seamless integration.
• Stay updated with 5G Core technologies and industry trends.

Skills

C

Go

Rust

Embedded Linux

ARM architecture

Multi-threading

Networking

Tools

DPDK

Job description

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.

Qualifications

• 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.