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Role Title: Telephony IMS Tester Hiring Mode: TP/FTELocation: Mountain View, CA [On-Site]Bill Rate: $115k125k/annum (base+bonus 5%)+benefits 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)