Sr. LTE/5G Network Test Engineer (VoLTE/IMS, Wireshark, QXDM)

Bellevue, WA
Full Time
Experienced

Senior LTE/5G Network Test Engineer

Onsite | W-2 | U.S. Citizen | Green Card

Role Overview

We are seeking a hands-on LTE/5G Network Test Engineer to perform end-to-end testing across RAN, Core, and IMS environments. Our client requires a W-2 or GC US work authorization, and we are not able to provide visa sponsorship or work with C2C arrangements. This role is 100% onsite, 5 days/week.

Key Responsibilities

  • Perform LTE/5G NR, VoLTE, IMS, and data-path testing

  • Validate attach, registration, bearer creation, PDU sessions, VoLTE/VoNR

  • Analyze logs (RRC, NAS, SIP, RTP, Diameter)

  • Build/manage test beds (UE, SIM, APN, eNB/gNB, EPC/5GC)

  • Use Wireshark, QXDM, QCAT, Radcom, IRIS, IXIA/Keysight

  • Execute full regression, performance, IOT, and KPI testing

  • Document defects, RCA, KPI dashboards, and test summaries

Required Experience

  • 5+ years LTE/5G testing

  • Strong VoLTE/IMS debugging

  • Proficiency with QXDM/QCAT, Wireshark

  • RAN + Core + IMS troubleshooting

  • 3GPP standards knowledge

  • U.S. Citizen/Green Card Holder

  • On-site 5 days/week

  • W-2 only

Preferred Background

  • Carrier acceptance testing

  • OEM device testing

  • Private 5G / CBRS

  • Satellite/NTN exposure

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