Technical Lead-Layer 2 Developer

Amantya Technologies; Bengaluru, New Delhi; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

Amantya Technologies in Bengaluru, Karnataka seeks an experienced LTE software engineer to design, develop and maintain the Layer 2 stack (PDCP/RLC/MAC) and related L2/L1 interfaces. You will implement scheduling algorithms, optimize resource allocation and ensure robust HARQ, power control and CA/ENDC integration.

Candidates must be fluent in C/C++, comfortable on Linux with IPC and multi-threading, and capable of translating 3GPP LTE specifications into production code, writing high-coverage

Qualifications

• Must be proficient in C/C++ and Linux-based development.
• Experience with LTE/L2/L3 protocol stacks and scheduling.
• Ability to translate 3GPP specs into production code and write tests.

Responsibilities

• Design, develop and maintain LTE Layer 2 stack.
• Optimize uplink/downlink scheduling and resource allocation.
• Implement FAPI/nFAPI interfaces for L2/L1.
• Build L2/L3 interfaces and bearer procedures.
• Translate 3GPP LTE specs into robust code and edge-case handling.
• Write unit tests with high coverage.
• Debug L2 protocol issues via PCAP/L2 traces and logs.
• Prepare LLD, HLD and interface specifications.
• Apply Linux IPC and multi-threading in development.
• Provide thorough code reviews and documentation.

Skills

LTE L2/L1 stack design

Uplink/Downlink scheduling

Resource allocation optimization

HARQ, Power control, SPS

FAPI / nFAPI interfaces

L2L3 (RRC) interfaces

3GPP LTE specs translation

Unit tests, high coverage

Debug L2 with PCAP/L2 traces

LLD/HLD & interface specs

C/C++ expert

Linux IPC & multi-threading

Job description

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 L2L1 interface handling via FAPI / nFAPI: encode/decode primitives, timing synchronization, error handling.
• Implement L2L3 (RRC) interface: configuration primitives, bearer setup/release, re-establishment procedures.
• Read and translate 3GPP LTE Release 817 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