Modem Chipset Field Test Engineer

Modem Chipset Field Test Engineer

Location:

[Bellevue, WA] (Onsite / Field-Based)
Travel: up to 15%
Job Type: Full-Time About the Role 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.

Key Responsibilities Perform field/drive testing for 5G , 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 DMTroubleshoot 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

Required Qualifications 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 , LTE, WCDMA/UMTS, GSMWorking 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

Preferred Qualifications

Experience with 3

GPP 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

Work Environment Combination of field testing (drive/walk testing) and lab validation

Testing may include outdoor, remote, or limited-connectivity environments

Requires travel (up to 15%) based on project scope

May require extended hours or weekend work for test cycles and deployments

Hands-on work with mobile devices, RF equipment, and satellite-enabled hardware

Requirements

Valid driver’s license and ability to travel to test locations

Ability to work in field environments and handle test equipment

Why work at BTI?

We’re committed to creating a workplace where employees feel valued, supported, and empowered to grow. Our team benefits from competitive compensation, comprehensive health and wellness offerings, and opportunities for professional development. We are proud to be an equal opportunity employer and make all employment decisions without regard to race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, genetic information, veteran status, or any other legally protected status.

We comply with all applicable federal, state, and local employment laws, including those related to fair hiring practices, pay transparency, workplace safety, and reasonable accommodations. We are dedicated to maintaining an inclusive environment where everyone has the opportunity to succeed and contribute meaningfully.
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