Tech Lead

Sense; Bengaluru; On-site; INR 800,000 - 1,600,000; Full time

Job summary

Sense is seeking a talented 4G/5G Layer 2 (MAC/RLC/PDCP) Engineer to design, develop, and optimize MAC, RLC, and PDCP layers for LTE and 5G NR in a dynamic, fast-paced product environment. You will focus on scheduling, resource allocation, QoS handling, and interoperability with Layer 1 and Layer 3 to deliver high-performance RAN software.

The role requires 3–8 years of hands-on experience, strong C/C++ skills, and a solid understanding of 3GPP LTE/5G NR standards, with Bangalore or Chennai as

Qualifications

• 3–8 years of hands-on experience in 4G/5G Layer 2 development.
• Strong C/C++ skills and Linux environment experience.
• Familiarity with MAC, RLC, PDCP protocols and LTE/5G NR specs.

Responsibilities

• Design, develop, and optimize MAC, RLC, and PDCP features for LTE and 5G NR.
• Improve MAC scheduling and radio resource allocation.
• Implement Layer 2 procedures, including segmentation and ARQ.
• Integrate Layer 2 with Layer 1 and Layer 3 components.
• Debug, analyze performance, and resolve interoperability issues.
• Collaborate with cross-functional R&D teams to deliver robust software.
• Ensure compliance with 3GPP LTE and 5G NR specs.

Skills

C/C++ programming

Layer 2 protocols design

Linux development

MAC scheduling

Debugging & analysis

Education

Bachelor's or Master's in ECE/Telecom/CS

Tools

GDB

Wireshark

Git

Job description

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) Engineer to 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 PDCP protocol 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 NR specifications.

Required Skills

• Strong programming skills in C/C++.
• Solid understanding of MAC, RLC, and PDCP protocols 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 NR standards.
• Experience working in a Linux development 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.
• 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.
• Good communication and collaboration skills.
• Ability to work in a fast-paced product development environment.

Job Requirements

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