Senior IREG & Network Test Engineer
New
J
JobgetherTelecommunications
Based in United StatesFull-TimeSenior
Salary$155,000–$165,000 for San Francisco, CA locations; $135,000–$145,000 for other U.S. locations.
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Job Details
- Experience
- 5+ years
- Required Skills
- PythonJiraCI/CDConfluence
Requirements
- 5+ years of hands-on experience in roaming validation, mobile core operations, interconnect routing, IREG testing, or telecommunications network testing.
- Strong knowledge of Diameter routing and SS7/MAP concepts, including S6a/S6d, SGd, roaming authentication, and registration flows.
- Advanced protocol troubleshooting capabilities, including extensive experience using Wireshark and network traces.
- Demonstrated experience designing and implementing automated telecommunications testing frameworks using Python.
- Experience integrating automated testing into modern CI/CD environments and maintaining regression pipelines.
- Strong knowledge of IR.21/RAEX data profiles, PLMN structures, IMSI records, and TADIG codes.
- Practical experience with NB-IoT, NTN satellite architectures, NIDD data paths, or cellular device laboratory environments is preferred.
- Familiarity with IMSI tracing tools, carrier-grade Diameter/SS7 diagnostic platforms, Jira, and Confluence is a plus.
- Experience connecting network signaling validation with TAP/BCE billing verification is preferred.
Responsibilities
- Define comprehensive IREG test strategies, including test cases, pass/fail criteria, network tracing procedures, validation metrics, and formal partner sign-off processes.
- Execute end-to-end roaming validation covering network registration, attach sequences, authentication, S6a/S6d, SGd SMS-over-NAS, IP, and NIDD data paths.
- Execute industry-standard roaming test suites while developing additional validation scenarios specifically designed for Non-Terrestrial Network (NTN) environments.
- Build, maintain, and continuously improve automated testing harnesses and laboratory environments.
- Analyze Diameter and SS7 traces, Wireshark captures, device logs, and network logs to isolate configuration and interoperability issues.
- Convert onboarding and production failures into repeatable regression tests and manage defects through root cause analysis.
- Develop and publish dashboards covering test coverage, validation cycle times, and defect trends.
- Collaborate across signaling, routing, billing, NOC, product teams, and external IPX providers.
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