Layer 2 Developer-4G/5G

Amantya Technologies; Gurugram District, Bengaluru; On-site; INR 3,000,000 - 4,000,000; Full time

Job summary

Amantya Technologies in Bengaluru seeks a Senior Layer 2 Developer to design, code and optimize LTE Layer 2 (MAC/RLC/PDCP) stack with a focus on real-time performance and standards compliance.

You will work on scheduling, HARQ, L2-L1/L2-L3 interfaces, LLD/HLD, and unit tests, using C/C++ on Linux with multi-threading and IPC.

The role demands 8+ years of experience and strong debugging skills with PCAPs, Wireshark, and protocol analysis to deliver robust deployments.

Qualifications

• Experience in LTE protocol stack development.
• Strong debugging and analytical thinking.

Responsibilities

• Design, develop and optimize LTE Layer 2 (PDCP/RLC/MAC) stack.
• Design and optimize Uplink/Downlink scheduling algorithms (QoS aware, fairness).
• Implement L2–L1 and L2–L3 interfaces; ensure timing synchronization and error handling.
• Read and translate 3GPP LTE specs into code and write tests with high coverage.

Skills

LTE Layer 2

MAC/RLC/PDCP

C/C++

Linux development

Multi-threading

L2–L1 interface (FAPI/nFAPI)

L2–L3 interface (RRC)

Unit testing

Network protocol debugging

Education

B.Tech / M.Tech in Electronics, Telecommunications, Computer Science, or equivalent

Tools

gdb

valgrind

Wireshark

QXDM

Job description

Job Title: Senior Layer 2 Developer 4G LTE eNodeB

Experience:8+ Years

Location:Bengaluru

Job Summary

We are seeking a highly skilled Layer 2 Developer with deep expertise in LTE eNodeB protocol stack development. The role focuses on designing, coding, and optimizing Layer 2 components (MAC, RLC, PDCP) with strong emphasis on real-time performance, scalability, and standards compliance.

Key Technical Skills:

• Design, develop and maintain LTE Layer 2(PDCP/RLC/MAC) stack.
• Design and optimize Uplink/Downlink scheduling algorithms (QoS aware, fairness, etc.)
• Optimization of Resource allocation block.
• Design, develop and optimization of HARQ process, Power control, SPS, TTI Bundling, Link Adaptation, CA, ENDC.
• Implement L2–L1 interface handling via FAPI / nFAPI: encode/decode primitives, timing synchronization, error handling.
• Implement L2–L3 (RRC) interface: configuration primitives, bearer setup/release, re-establishment procedures.
• Read and translate 3GPP LTE Release 8–17 specifications directly into code, handling edge cases and error conditions.
• Write and maintain unit tests with high code coverage for each developed module.
• Debug L2 protocol issues independently — analyze PCAP captures, L2 traces, and scheduler logs to isolate root causes
• Should be able to prepare LLD, HLD and Interface specifications
• Expert in C/C++
• Strong experience in Linux-based development with IPC and multi-threading

Debugging Tools

• gdb, valgrind
• Wireshark / protocol analyzers
• QXDM

Soft Skills:

• Strong debugging and analytical thinking
• Ownership of features end-to-end
• Ability to mentor junior developers
• Good communication skills

Education:

• B.Tech / M.Tech in Electronics, Telecommunications, Computer Science, or equivalent