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Job Description:
Overview
Job Description:
Overview
- We are seeking a highly experienced 4G/5G Device & Chipset Testing Engineer to support Interoperability (IODT), protocol validation, and PHY-layer analysis for advanced RAN products. The role focuses on end-to-end device behavior validation in lab environments with chipset and network vendors.
- This is a hands-on technical role requiring deep expertise in LTE/NR protocol stack debugging, PHY analysis, and lab-based interop testing.
- Execute IODT / interoperability testing with chipset and device partners
- Perform 4G LTE and 5G NR protocol validation in lab environments
- Analyze protocol logs (RRC / PDCP / RLC / MAC / PHY) for issue identification
- Debug UE call failures, mobility issues, throughput degradation, and attach/registration failures
- Work closely with chipset vendors (Qualcomm/MediaTek-class ecosystems) for issue resolution
- Perform E2E performance validation of RAN features and releases
- Convert 3GPP feature requirements into system test cases
- Perform root cause analysis using XCAL / QXDM / Wireshark logs
- Support feature validation, regression testing, and release readiness
- Present findings and test reports to internal teams and customers
- Strong experience in Device / UE / Chipset testing (MANDATORY)
- Deep understanding of 4G LTE & 5G NR air interface
- Strong knowledge of PHY, MAC, RLC, PDCP, RRC layers
- Hands-on experience in protocol log analysis and troubleshooting
- Experience with lab testing environments
- Exposure to IODT / interoperability testing
- Experience using tools such as:
- XCAL / QXDM
- Wireshark
- Spectrum analyzers / signal generators (preferred)
- Strong understanding of call flows and 3GPP architecture
- Experience with companies like:
- Qualcomm, Apple, Samsung, Ericsson, Nokia, MediaTek
- Experience in UE modem / chipset validation teams
- Exposure to eMTC / NB-IoT / NSA / SA 5G
- Experience in EMS, network element management, SW upgrades