Telephony IMS Tester

Role: Telephony IMS Tester
Location: Mountain View, CA(Day 1 onsite is must)

Job Description:
• Understanding of 5GNR/LTE/UMTS 3GPP Air interface specifications. Network Carrier Testing Experience, LTE, 5G-NR protocol knowledge at UE side (L1/L2/L3)
• Hands-on experience and knowledge of 3GPP (UMTS & LTE) Layer 2 and Layer 3 protocol and call processing
• IMS/VoLTE Experience is a must
• Must have knowledge of 3GPP IMS core standards. Network Carrier Testing Experience, LTE, 5G-NR protocol knowledge at UE side (L1/L2/L3)
• Good at Debugging and root causing the issues
• Exposure to commercial test simulators and test systems such as: Keysight, R&S, Spirent and Anritsu for wireless telephony product verification
• Familiarity with RF testing, test hardware, mobile phone testing including hardware and android software
• Nice to have test automation and python scripting skill
• Good understanding of 3GPP2 CDMA and 3GPP 5G/4G/3G/2G systems
• Good understanding of Telephony and protocol stack service
• Knowledge of QXDM logs and ADB Commands (must)