Vendor Lead Cellular Wwan Validation Engineer

Job Title: Vendor Lead Cellular / WWAN Validation & Debug

Work Location: Redmond, WA

Employment Type: Fulltime/Permanent

Key Responsibilities:

Perform end-to-end device validation for cellular technologies including LTE, 5G (SA/NSA) features

Execute and analyze lab and field testing across multiple carriers and network conditions

Conduct protocol level debugging using logs (QXDM, MBIM traces, modem logs, etc.)

Identify, isolate, and root cause cellular connectivity issues (attach, call drops, data failures, standby behavior)

Work with internal teams and vendors to triage bugs and drive issues to closure

Support regression validation and sanity verification.

Generate test reports, defect summaries, and RCA documentation

Contribute to improving test coverage, automation, and validation frameworks

Core Technical Skills:

Strong protocol knowledge (3GPP, LTE/5G signaling, NAS/RRC basics, IMS/SIP flows)

Device testing experience (smartphones, modems, or embedded systems)

Hands-on experience with cellular test equipment (e.g., call boxes like Anritsu, Keysight, Rohde & Schwarz)

Experience in log analysis and debugging tools (e.g., QXDM, modem logs, trace analysis)

Good understanding of cellular call flows, attach procedures, and data connectivity

Working knowledge of scripting (Python / PowerShell / Bash) for test automation, log parsing, or workflow efficiency

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