5G gNB Layer - Layer Developer

Position: 5G gNB Layer 2 - Layer 3 Developer

Responsibilities

• Develop and optimize 5G 2/Layer 3 functionalities including MAC, RLC, PDCP, RRC, and NGAP.
• Implement advanced L2 scheduling algorithms, HARQ mechanisms, and efficient buffer management.
• Collaborate on the development of UE and gNB L2/L3 stacks, ensuring robust protocol compliance and performance.
• Optimize network performance by enhancing throughput, reducing latency, and improving handover processes.
• Debug and troubleshoot protocol stack behaviors using logs and advanced tracing tools.
• Integrate and test L2/L3 software with the physical layer (PHY) and core network (5GC) to ensure seamless operations.

Requirements

• 3+ years of experience in 5G LTE RAN development (L2/L3)
• Bachelor's or Master's Degree in Computer Science, Electrical Engineering, Telecommunications, or a related field.
• Strong programming skills in C, C++, and experience with multi-threaded and real-time systems.
• Deep understanding of MAC, RLC, PDCP, RRC, NGAP protocols.
• Experience with L2 scheduling, HARQ, QoS, and mobility management.
• Familiarity with 3GPP (Rel-15 and later) specifications.
• Strong debugging skills with tools like Wireshark, TShark, QXDM, or similar.
• Experience in real-time OS (RTOS) or Linux kernel networking stack.
• Knowledge of DPDK, VPP, or other high-performance packet processing frameworks is a plus.
• Experience in O-RAN, Open RAN, or vRAN architectures is a plus.