Modem Chipset Lab Test Engineer

BTI Solutions•San Diego, CA

7d•$24 - $100•Onsite

About The Position

We are seeking a Mobile Lab Test Engineer to support 5G/LTE and NTN (Non-Terrestrial Network) / Satellite validation in controlled lab environments. This role focuses on RF testing, protocol validation, log analysis, and system integration using industry-standard test equipment and tools. You will work closely with R&D and carrier teams to validate device performance, network behavior, and feature functionality across 3GPP-based cellular and satellite systems.

Requirements

Bachelor’s degree in Telecommunications, Electrical Engineering, Computer Science, or equivalent experience
Hands-on experience in lab testing / RF testing / telecom testing
Strong knowledge of 5G NR, LTE, WCDMA/UMTS, GSM
Working knowledge of NTN / satellite communications concepts (LEO/GEO, latency, coverage)
Experience with RF test equipment (Spirent, Keysight, R&S, Anritsu, Anite)
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
Ability to work in a lab environment with test equipment and hardware setups
Basic understanding of system integration and test configuration management

Nice To Haves

Experience with 3GPP Release 17+ NTN standards or Direct-to-Device (D2D)
Knowledge of 5G protocol stack (PHY, MAC, RRC, NAS signaling)
Experience in carrier certification or device validation labs
Familiarity with Wireshark, GNSS/GPS, RF propagation concepts
Basic scripting (Python, ADB, Shell) for test automation
Experience with Wi-Fi, Bluetooth coexistence testing

Responsibilities

Perform lab-based testing for 5G NR, LTE, 3G, and NTN/satellite networks
Execute RF, protocol, and performance testing (throughput, latency, call scenarios)
Set up and configure lab test environments using RF equipment and network simulators
Operate and manage test systems and tools: Spirent, Keysight, R&S (Rohde & Schwarz), Anritsu, Anite
Capture and analyze logs using QXDM, QPST, XCAL/XCAP, Shannon DM
Troubleshoot VoLTE/VoNR, data connectivity, signaling, and protocol issues
Perform protocol stack analysis aligned with 3GPP standards
Validate software/modem updates, patches, and new feature implementations
Conduct packet-level analysis using Wireshark (TCP/IP, UDP)
Develop and execute test plans and test cases (devices, configurations, KPIs)
Document results and produce clear technical reports
Collaborate with R&D, QA, and carrier labs to resolve defects and improve performance
Support field testing activities as needed