4G/5G Stack L2 Lead/ Engineer
FuziXel Technologies · Bengaluru · onsite · Posted 43d ago
Not disclosedFresherfulltimeSourced from
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About this role
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
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
[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
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.
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
- Strong hands-on experience in 4G/5G L2 software development.
- Experience with MAC scheduler development and optimization is highly 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
Sourced from foundit
Skills
ARM-based server environmentsCU deploymentsIxLoad WirelessVirtualized DUSOCX86Linux debuggingPerformance Tuningclog analysismacwiresharklteFPGADPDK5G NRSR-IOVrlcpdcpQCATViaviDPUPythonpcapIxNetworkSpirent LandslideSmart NICASN.1Huge Pages