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# QXDM Device Specialist

- **Company:** Fns, Inc.
- **Location:** United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** LTE (Telecommunication), JIRA, Computer Engineering, Software Debugging, Firmware, Python (Programming Language), Network Troubleshooting, Regression Testing, Shell Script, Wireshark, Diagnostic Tools, 5G NR, Software Troubleshooting, Wireless Devices, Testrail
- **Published:** September 24, 2026
- **Apply:** https://www.thejobnetwork.com/job/b02298b3-3514-4e98-80cf-f4f963e2fc93/qxdm-device-specialist

## About the Role

* 3-5 years of experience in wireless device testing, modem diagnostics, or cellular protocol troubleshooting.
 * Hands-on experience with Qualcomm QXDM.
 * Strong knowledge of 4G LTE, 5G NR, NSA, and SA technologies.
 * Experience with Android devices, ADB, QPST, QCAT, and Qualcomm DIAG tools.
 * Familiarity with RRC, NAS, IMS, VoLTE, VoWiFi, carrier aggregation, and EN-DC.
 * Strong troubleshooting, analytical, communication, and documentation skills.
 * Bachelor's degree in Electrical Engineering, Computer Engineering, Telecommunications, or a related field preferred.
 * Candidates must be authorized to work in the United States.
 * Ability and willingness to work 100% onsite at the client location.

Preferred Qualifications

 * Experience with carrier testing, device certification, RF testing, or network emulators.
 * Knowledge of 3GPP standards.
 * Experience with Python, shell scripting, Wireshark, Jira, or TestRail.

## Description

FNS Systems LLC is seeking a QXDM Device Specialist for an immediate client opportunity. This is a 100% onsite position. The ideal candidate will have hands-on experience troubleshooting and validating 4G LTE and 5G NR devices using Qualcomm diagnostic tools.

Responsibilities

 * Capture and analyze device logs using QXDM, QCAT, QPST, and Qualcomm DIAG tools.
 * Troubleshoot LTE, 5G NSA, and 5G SA connectivity issues.
 * Investigate registration, call setup, data, handover, throughput, IMS, VoLTE, and VoWiFi issues.
 * Analyze RRC, NAS, IMS, SIP, MAC, and PHY-layer logs.
 * Reproduce device and network issues and identify root causes.
 * Create detailed defect reports, test results, and technical documentation.
 * Support device validation, regression testing, carrier acceptance, and field-debug activities.
 * Collaborate onsite with modem, firmware, RF, network, and QA engineering teams.


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