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VoLTE Test Engineer

Job

Apton Inc

Mountain View, CA (In Person)

Full-Time

Posted 3 days ago (Updated 10 hours ago) • Actively hiring

Expires 6/8/2026

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Job Description

Title:
IMS NTN VoLTE Test Engineer Location:
Mountain View, CA (on-site)
Duration:
12+ months
Required Skills and Experience:
6 to 8 years of experience in
NTN, NR, LTE, IMS
protocol stack Development, and Testing Experience in Python and Shell scripting for automation framework development Well versed with Testing strategy for NTN(Non-Terrestrial-Testing (Skylo & Starlink), Telephony, eSIM Perform Functional, Regression, Sanity, Feature testing for NTN, Telephony, e
SIM CBRS
(5G Private Network Testing) with charters, Xfinity operators Network slicing, Unified Call logs, NTN, T911 to eSOS Log analysis with various Android bug tool, QXDM, QPST, QCAT, Shannon Tools etc. hands on experience on using Keysight
E7515 UXM
5G, Anirtsu 8475B, CMW500, CMW100 call boxes to validate
NR, LTE, IMS, L+GWL
call flows, handovers. Triaging/ debugging of issues reported by Field test teams Experience using Shannon
DM,QXDM, QCAT
tool for log analysis

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