LTE / NR5G / O-RAN Protocol Stack Tester

Location: Hyderabad

Experience: 10–15 Years

We are looking for an experienced LTE, NR5G, and O-RAN Protocol Stack Tester with robust 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

📌 LTE,G, ORAN Protocol Stack Tester (Hyderabad)
🏢 Tata Consultancy Services
📍 Hyderabad