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

- Solid 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

Qualifications

[Some qualifications you may want to include are Skills, Education, Experience, or Certifications.]

Example: Excellent verbal and written communication skills

Skills: c++,python,c

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