Modem Chipset Field Test Engineer

BTI Solutions•Bellevue, WA

1d•Onsite

About The Position

We are seeking a Mobile Field Test Engineer to support 5G/LTE and NTN (Non-Terrestrial Network) / Satellite testing in real-world environments. This role focuses on end-to-end validation, log analysis, and troubleshooting across terrestrial and satellite (LEO/GEO, Direct-to- Device) networks in collaboration with R&D, QA, and carrier teams.

Requirements

Bachelor’s degree in Telecommunications, Electrical Engineering, Computer Science, or equivalent experience
Hands-on experience in mobile field testing / wireless / telecom testing
Strong knowledge of 5G NR, LTE, WCDMA/UMTS, GSM
Working knowledge of NTN / satellite communications (LEO/GEO, latency, coverage)
Experience with log analysis tools (QXDM, QPST, XCAL, Shannon DM or similar)
Understanding of network protocols (TCP/IP, UDP, OSI model)
Experience with Android device testing and mobile software validation
Familiarity with VoLTE/VoNR, data testing, and KPI validation
Proficiency in Microsoft Office for reporting
Strong analytical and troubleshooting skills
Valid driver’s license and ability to travel to test locations
Ability to work in field environments and handle test equipment

Nice To Haves

Experience with 3GPP Release 17+ NTN standards
Hands-on exposure to Direct-to-Device (D2D) satellite connectivity
Understanding of 5G protocol stack (PHY, MAC, RRC, NAS signaling)
Experience in carrier certification or satellite communication testing
Knowledge of GNSS/GPS, RF propagation, and mobility scenarios
Familiarity with automation/scripting (ADB, Python, Shell)
Experience with Wi-Fi, Bluetooth coexistence testing

Responsibilities

Perform field/drive testing for 5G NR, LTE, 3G, and NTN/satellite networks
Execute RF, mobility, and data performance testing (throughput, latency, call scenarios)
Validate handover between cellular and satellite (NTN) networks
Capture and analyze logs using QXDM, QPST, XCAL/XCAP, Shannon DM
Troubleshoot VoLTE/VoNR, data connectivity, and network performance issues
Develop and execute test plans (routes, devices, KPIs, network conditions)
Perform packet analysis using Wireshark (TCP/IP, UDP)
Validate software/modem updates and feature enhancements
Document results and deliver clear technical reports
Configure and maintain test devices, SIM/eSIM, and test environments
Collaborate with carrier labs, OEMs, and chipset teams for issue resolution