IMS Network Test Engineer
The Select Group

IMS Network Test Engineer:
This project focuses on migrating Voice over LTE (VoLTE) services to new hardware platforms while maintaining the existing IMS-based software application. The role requires an experienced IMS Network Engineer with a strong background in QA and Test Validation to conduct comprehensive testing of VoLTE services within the IP Multimedia Subsystem (IMS) framework. The ideal candidate should possess in-depth knowledge of IMS architecture, VoLTE call flows, SIP signaling, and proficiency in specialized IMS testing tools and methodologies. This is going to be a long term contract, located in either Bellevue, WA or Leawood, KS.

IMS Network Test Engineer Requirements:

• 5+ years of Mavenir IMS Core Network Platform Experience (if minimal IMS specifically, must be strong in Nokia background - must be version 1 or 1.5)
• Must have TAS, I/S-CSCF and BGCF within IMS Solutions
• Experience validating IMS E2E call flows.
• This is critical for the QA/Test Validation aspect of the role, ensuring end-to-end functionality of VoLTE calls.
• Strong knowledge of TCP/IP networking, TCP, UDP, SCTP, HTTP.
• Must have the VoLTE experience within the network (Voice over LTE Network)
• Interfaces: Sh, Cx, H.248, SIGTRAN
• Protocols: SIP, DIAMETER, HTTP, SS7, MAP
• Familiarity with UNIX, LINUX, Kubernetes, virtualization and Cloud Native.
• Knowledge of protocol analysis, Wireshark, Netscout, tcpdump:
• These tools are essential for debugging and analyzing VoLTE call flows and network traffic, which is a key part of QA and test validation.

Nice to Have Skills:

• Experience with testing and troubleshooting on the Mavenir IMS TAS, CSCF and BGCF

IMS Network Test Engineer Responsibilities:

• Support E2E validation of IMS solution, TAS, I/S-CSCF, BGCF software releases and features.
• Support IMS core Lab issue diagnoses, troubleshooting and resolution
• Design and execute rigorous test plans for regression, performance, and end-to-end validation of VoLTE calls in the IMS environment.
• Manage increased testing frequency due to platform updates, maintaining consistent performance metrics, and optimizing test procedures for IMS-based VoLTE services.
• Ensure seamless functionality, optimal voice quality, and adherence to IMS protocols across various platform changes

TSG is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.
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