LTE, NR5G, ORAN Protocol Stack Tester

LTE / NR5G / O-RAN Protocol Stack Tester

Location: Hyderabad

Experience: 10–15 Years

Job Description

We are looking for an experienced LTE, NR5G, and O-RAN Protocol Stack Tester with strong expertise in wireless communication protocols, protocol validation, test automation, interoperability testing, and end-to-end telecom system verification.

Key Responsibilities

• Validate LTE, 5G NR, and O-RAN protocol stack functionality across L1/L2/L3 layers.
• Design, develop, and execute protocol test cases for RRC, PDCP, RLC, MAC, PHY, NGAP, XnAP, F1AP, E1AP, and O-RAN interfaces.
• Perform feature validation, regression testing, compliance testing, and interoperability testing.
• Analyze logs and traces using Wireshark, QXDM, TEMS, Amarisoft, Spirent, or similar tools.
• Validate CU, DU, RU interactions in O-RAN architectures.
• Identify protocol issues, root-cause defects, and work with development teams for resolution.
• Develop and maintain automated test frameworks using Python or Shell scripting.
• Support performance, stability, and system integration testing activities.

Mandatory Skills

• LTE Protocol Stack Testing
• 5G NR Protocol Testing
• O-RAN Architecture and Interfaces
• RRC, MAC, RLC, PDCP, NAS Protocols
• F1AP, E1AP, XnAP, NGAP
• Protocol Log Analysis
• Python/Test Automation
• Telecom Testing Tools (Wireshark, QXDM, Spirent, Keysight, Amarisoft)

Preferred Skills

• O-RAN Alliance specifications
• Cloud-native RAN/OpenShift/Kubernetes
• CI/CD and Automation frameworks
• Experience with telecom product companies