Tips: Provide a summary of the role, what success in the position looks like, and how this role fits into the organization overall.

Responsibilities

Education: Bachelor's degree or above in Computer Science, Telecommunications, Information Engineering, Automation, or related fields.

Key Responsibilities

Develop and debug 4G/5G L2 software using C/C++ and Python.
Work on MAC, RLC, and PDCP layers for LTE and 5G NR.
Design, develop, optimize, and debug MAC scheduling algorithms for LTE eNB and 5G gNB.
Work on segmentation/reassembly, retransmission, flow control, QoS, ciphering/integrity, and packet handling.
Understand HARQ, TDD/FDD timing, uplink scheduling, DRX, Buffer Status Reports (BSR), and Logical Channel Prioritization (LCP).
Optimize L2 performance for latency, throughput, retransmissions, fairness, QoS, and power saving.
Analyze system logs, L2 traces, PCAPs, timing logs, and RF test results to identify and resolve issues.
Work with L1/L2/L3 interfaces and understand 3GPP RAN architecture.
Support interoperability testing across different UEs, chipsets, core networks,



and network vendors.
Work with protocol decoding and ASN.1 workflows.

Tools & Technologies

C/C++, Python

LTE / 5G NR

MAC / RLC / PDCP

ASN.1 and protocol decoding

Linux debugging and performance tuning

QCAT, Viavi, IxLoad Wireless, IxNetwork

Spirent Landslide

Wireshark

PCAP and log analysis

DPDK, Hugepages, SR-IOV

FPGA/SoC, SmartNIC/DPU

x86/ARM-based server environments

Virtualized DU/CU deployments

Preferred Experience

Robust hands-on experience in 4G/5G L2 software development.
Experience with MAC scheduler development and optimization is highly preferred.

For senior-level profiles, experience driving 4G/5G L2 development programs and delivery is preferred.

[Be specific when describing each of the responsibilities. Use gender-neutral, inclusive language.]

Example: Determine and develop user requirements for systems in production, to ensure maximum usability

Qualificati

📌 4G/5G StackLead/ Engineer (Bengaluru)
🏢 FUZIXEL TECHNOLOGIES PRIVATE
📍 Bengaluru