LTTS India

Bangalore

–4G/5G Layer 2 (MAC/RLC/PDCP) Engineer

Position

4G/5G Layer 2 (MAC/RLC/PDCP) Engineer

Experience

3–8 Years

Location

Bangalore / Chennai

Role Summary

We are looking for a talented 4G/5G Layer 2 (L2) Engineerto develop, enhance, and optimize the Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP) layers for LTE and 5G NR Radio Access Network (RAN) solutions. The role involves implementing Layer 2 features, optimizing scheduling and resource allocation, integrating with Layer 1 and Layer 3, and ensuring high-performance, standards-compliant RAN software.

Key Responsibilities

Design, develop, and optimize MAC, RLC, and PDCPprotocol stack features for LTE and 5G NR.

Develop and enhance MAC scheduling, radio resource allocation, QoS handling, and traffic management.

Implement Layer 2 procedures, including segmentation, reassembly, retransmissions (ARQ), buffering, and flow control.

Integrate Layer 2 functionalities with Layer 1 (PHY) and Layer 3 (RRC) components.

Analyze and resolve protocol, performance, and interoperability issues through debugging and root cause analysis.

Collaborate with system integration, testing, and cross-functional R&D; teams to deliver robust and scalable software.

Ensure compliance with 3GPP LTE and 5G NRspecifications.

Required Skills

Strong programming skills in C/C++.

Solid understanding of MAC, RLC, and PDCPprotocols in LTE and 5G NR.

Experience with MAC scheduling, resource allocation, QoS management, and protocol optimization.





Strong debugging, troubleshooting, and protocol analysis skills.

Good knowledge of 3GPP LTE and 5G NRstandards.

Experience working in a Linuxdevelopment environment.

Tools & Technologies

Telecom debugging and protocol analysis tools

Protocol analyzers and log analysis tools

Linux debugging tools (GDB, Wireshark, etc.)

Lab test setups and network simulators

Version control systems (Git preferred)

Preferred Qualifications

Experience with eNodeB (eNB)or gNodeB (gNB)Layer 2 software development.

–4G/5G Layer 2 (MAC/RLC/PDCP) Engineer

Wednesday, July 1, 2026

11:31 AM

Nokia NM Page 1

Experience with eNodeB (eNB)or gNodeB (gNB)Layer 2 software development.

Exposure to vRAN, cloud-native RAN, or virtualized network functions.

Understanding of Layer 1 (PHY) and Layer 3 (RRC) interactions.

Familiarity with Agile development methodologies and software performance optimization.

Education

Bachelor's or Master's degree in Electronics & Communication Engineering, Telecommunications, Computer Science, Electrical Engineering, or a related field.

Desired Competencies

Strong analytical and problem-solving skills.

Excellent debugging and performance optimization capabilities.

Valuable communication and collaboration skills.

Ability to work in a fast-paced product development environment.

Job Requirement

Strong programming skills in C/C++. • Good understanding of Digital Signal Processing (DSP)concepts, including FFT, filtering, and signal processing.

📌 Tech Lead (Bengaluru)
🏢 Lu0026T Technology Services
📍 Bengaluru