Systems Test Engineer - 5G/LTE Protocol Testing

Job Title: Systems Test Engineer - 5G/LTE Protocol Testing Location: San Diego, California 92121 Duration: 24 months About the Role Client is seeking an experienced Staff Systems Test Engineer to join the Intellectual Property (IP) Engineering team. The selected candidate will be responsible for developing and executing advanced 5G NR and LTE protocol test scenarios for commercially available mobile devices in a lab environment. This role requires strong expertise in 3GPP protocol analysis, cellular call scenario development, and mobile device testing using Keysight UXM platforms. Required Skills Strong experience with: 5G NR (3GPP Release 15) LTE FDD/TDD NSA & SA architectures Deep understanding of LTE/5G protocol stack layers: PHY MAC RLC PDCP RRC NAS Upper Layers Hands-on experience with: Keysight E7515B (UXM 5G) PRT and/or Test App Strong programming skills in: Python MATLAB Experience using lab test equipment: Spectrum Analyzer Oscilloscope UE Power Analyzer Proven experience in: 3GPP protocol analysis Troubleshooting wireless systems Cellular call scenario development Excellent communication and presentation skills Preferred Skills Experience with: WiFi standards (802.11 a/b/g/n/ac) Bluetooth features/testing Knowledge of: Qualcomm QXDM MTP provisioning/testing Wireshark Exposure to: Patent/IP analysis GCF compliance testing Key Responsibilities Develop detailed test plans based on high-level engineering requirements Create and execute 5G NR/LTE call scenarios Perform protocol stack testing in a lab environment Analyze and troubleshoot protocol behavior and test failures Post-process and present test results to engineering and legal teams Conduct 3GPP standards and specification research Identify applicable GCF tests for compliance validation Develop practical and innovative mobile device testing solutions Required Experience Minimum 8+ years of industry experience in wireless/mobile testing Strong background in 5G/LTE modem and protocol testing Education Requirements Bachelor's degree with 4+ years of relevant experience OR Master's degree with 3+ years of relevant experience OR PhD with 2+ years of relevant experience Degrees accepted in: Engineering Computer Science Information Systems Related technical fields