Technical Lead

Amantya Technologies; Bengaluru; On-site; INR 3,000,000 - 6,500,000; Full time

Job summary

Amantya Technologies in Bengaluru seeks a Senior Layer 2 Developer with deep LTE eNodeB protocol stack experience. The role emphasizes real-time performance, scalability, and standards compliance across MAC, RLC, and PDCP layers.

You will design, implement, and optimize Layer 2 components, develop L2–L1 interfaces via FAPI/nFAPI, and ensure robust testing and debugging capabilities in a Linux environment.

Qualifications

• 8+ years of experience in LTE/L2 development.
• Expert in C/C++ on Linux with IPC and multi-threading.
• Experience in MAC/RLC/PDCP layers.
• Strong debugging and problem-solving skills.
• Ability to translate 3GPP LTE specs into code.
• Experience with unit testing and code coverage.

Responsibilities

• Design, implement, and optimize LTE Layer 2 stack components (MAC/RLC/PDCP).
• Develop L2-L1 interfaces via FAPI/nFAPI and timing synchronization.
• Implement L2-L3 interfaces (RRC) for bearers and configurations.
• Analyze PCAP/L2 traces and scheduler logs to debug issues.
• Prepare LLD and HLD and interface specs.
• Write high-coverage unit tests.

Skills

C/C++

Linux

Multi-threading

Unit testing

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