LTE, NR5G, ORAN HL Protocol Stack Developer-sri

Job Title: Senior LTE / NR5G / O-RAN High Layer Protocol Stack Developer

Experience: 10-15 Years
Location: Bangalore / Hyderabad / Delhi NCR
Employment Type: Full-Time

Job Description

We are looking for an experienced LTE/5G Protocol Stack Developer with strong expertise in 4G LTE, 5G NR, and O-RAN technologies. The ideal candidate will be responsible for design, development, integration, and optimization of High Layer Protocol Stack components for next-generation wireless communication systems.

Key Responsibilities

• Design and develop LTE and 5G NR Layer 2 / Layer 3 protocol stack features.
• Develop and enhance RRC, PDCP, SDAP, NAS protocol modules.
• Analyze and implement 3GPP specifications for LTE and 5G NR.
• Work on O-RAN architecture including CU, DU, RIC, and Open Interfaces.
• Develop signaling procedures related to registration, mobility, handover, paging, and bearer management.
• Perform protocol debugging, troubleshooting, and performance optimization.
• Analyze protocol logs using Wireshark, QXDM, and other telecom tools.
• Collaborate with system architects, validation teams, and customer engineering teams.
• Support interoperability testing and field deployment activities.

Mandatory Skills

• LTE Protocol Stack
• 5G NR Protocol Stack
• O-RAN Architecture
• RRC
• PDCP
• SDAP
• NAS
• CU-CP / CU-UP / DU
• F1AP / E1AP / XnAP
• C Programming
• C++
• Linux
• Multithreading
• Telecom Protocol Development
• 3GPP Specifications