Modem Test Engineer

TechDigital Group; Mountain View (CA); On-site; USD 80,000 - 140,000; Full time

Job summary

An established industry player is seeking a skilled network testing engineer with expertise in 5GNR, LTE, and UMTS specifications. This role involves hands-on experience with IMS/VoLTE and a deep understanding of 3GPP protocols. You will be responsible for testing and verifying wireless telephony products using advanced commercial test simulators. The ideal candidate will possess strong debugging skills and familiarity with RF testing and mobile phone testing. Join a dynamic team where your contributions will enhance cutting-edge telecommunications technology and drive innovation in the industry.

Qualifications

• Experience with 5GNR, LTE, and UMTS specifications is crucial.
• Hands-on knowledge of IMS/VoLTE and debugging issues is required.

Responsibilities

• Test and verify wireless telephony products using commercial test simulators.
• Debug and root cause issues in network carrier testing.

Skills

5GNR/LTE/UMTS specifications

Network Carrier Testing

3GPP Layer 2 and Layer 3 protocols

IMS/VoLTE

Debugging skills

RF testing

Test automation

Python scripting

Telephony protocol stack

QXDM logs and ADB Commands

Tools

Keysight

R&S

Spirent

Anritsu

Job description

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.
• 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).