Mobility Wireless - QXDM Device Specialist

The ideal candidate will have hands-on experience troubleshooting and validating 4G LTE and 5G NR devices using Qualcomm diagnostic tools. 3–5 years of experience in wireless device testing, modem diagnostics, or cellular protocol troubleshooting.

Benefits:

• Health insurance
• Paid time off
• Training & development
• Vision insurance
• Dental insurance

Hiring Company: FNS Systems LLC
Client Need: Immediate
Experience: 3–5 years
Work Arrangement:100% Onsite
Employment Type: [Contract to Full-Time]



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.

Required Qualifications

• 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.

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.

FNS Systems LLC. is an equal-opportunity employer. We consider qualified applicants without regard to race, color, religion, sex, national origin, age, disability, veteran status, or any other status protected by applicable law.