IMS Core Engineer
Location: Bellevue
Posted on: June 23, 2025
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Job Description:
Description: The IMS Systems Lab Test engineer will primarily
work on testing and validating IMS Network Applications on the
T-Mobile Private Cloud Platform. This will cover comprehensive and
end to end network functionality testing, including IMS-based
services such as Voice and Messaging, from 4G, 5G and Wi-Fi access.
The test engineer will also verify platform resiliency, negative
scenarios and load & performance test cases. The overall objective
is to verify functionality and reliability on IMS Network
Applications deployed on a private cloud infrastructure. The Test
Engineer should have the following technical background and
experience: Familiarity with 4G/LTE and 5G SA Cellular Network,
including Packet Core and IMS Core. Familiarity and experience with
IMS/SIP signaling, including LTE/5G and IMS Network registration,
VoLTE/VoNR call set-up, SMS/RCS message signaling, network SIP
routing. Experience in lab testing procedures, test cases review
and tracking and issue logging and network troubleshooting.
Experience with Network Tools such as Netscout, Wireshark and
Landslide, as well as device test-based tools. Experience with
Cloud Network platform technology such as Kubernetes and RedHat
OCP/OpenShift Container Platform. Experience with Core Network
Platforms from Mavenir, Nokia or Ericsson.
Keywords: , Seattle , IMS Core Engineer, IT / Software / Systems , Bellevue, Washington
