Wireless Standard Experience as 4G 5G

Skill-set & Expertise Level

▪ Expertise on MAC scheduling algorithms for eNB (LTE), gNB (5G), including their design, development, optimization, and debugging.

▪ Proficiency in MAC, RLC, PDCP for design and implementation for LTE and NR, including segmentation/reassembly, retransmission, flow control, packet splitting/ duplication, ciphering/integrity interaction points, , QoS.

▪ Understanding of L2 implications of TDD vs FDD timing for duplex-driven HARQ and scheduler timing, uplink grant strategies, DRX interactions, buffer status behavior, logical channel prioritization.

▪ Experience in optimization for latency, retransmission efficiency, throughput, fairness, DRX/power-saving behavior, QoS flow to radio bearer mapping

▪ Grasp of L2 interfaces with L1 (Physical Layer) and L3, 3GPP RAN split architectural options

▪ Programming: C/C++/ Python Programming Language, memory pooling, Programming & Debugging state machine design, error handling, traceability, and robust interoperability engineering across different UE/chipset/core/network-vendor combinations, ASN.1/protocol decode workflows

▪ Log Analysis: Proficiency in analyzing system logs to diagnose issues.

▪ Specialized Tools: Expertise in using tools like QCAT (UE logs) Viavi (network testing and measurement equipment) plus IxLoad Wireless, IxNetwork, Spirent Landslide, Wireshark.

▪ Understanding of FPGA/SoC-based radio acceleration,



SmartNIC/DPU-assisted data paths, DPDK/hugepages/SR-IOV, Linux performance tuning for virtualized DU/CU implementations, x86/ARM servers deployment, diagnosis of KPI loss using L2 traces, PCAPs, timing logs, and RF test outputs using protocol decodes, and traffic emulators

▪ 12 years L2 software development experience

▪ Additional years of driving delivery of 4G/5G L2 programs

Roles & Responsibilities

▪ Systems Engineering, design, architecture, coding, debugging and implementation, feature scalability from a broader system-level perspective for 4G/5G L2 - FDD and TDD

▪ Review and Mentor high performance L1 teams towards delivery excellence in the following :

- PDCP/RLC/MAC layer development on various platforms and integrations with L1 and L3, OAM etc for high performance basestations

▪ Ability to drive large scale 4G/5G L2 product development, sustenance and customer support programs involving multiple variants of eNodeBs/gNodeBs in various forms including vRAN/ORAN/custom

▪ Ability to communicate with senior levels of internal and external stakeholders

Perks:

- Health insurance
- Paid time off

Application Question(s):

- Which Layer-2 protocol have you worked on—MAC, RLC or PDCP? Describe your development work.

- Explain one scheduler or HARQ issue you debugged. Which logs/tools (Wireshark, QCAT, Viavi) did you use?

Work Location: In person

📌 Software Engineer Telecom 4G 5G (India)
🏢 Maven Workforce
📍 India