JV
Cellular Validation Engineer
Accepting applicationsJobs via Dice · Sunnyvale, CA
Full-Time Mid_senior PythonRFaiaterf
Posted
24 Apr
Category
Test
Experience
Mid_senior
Country
United States
Dice is the leading career destination for tech experts at every stage of their careers. Our client, SGS Consulting, is seeking the following. Apply via Dice today!
Summary:
We are seeking a highly technical Wireless System Validation Engineer to drive the qualification and optimization of our next-generation cellular products. In this role, you will be responsible for the end-to-end validation of cellular modem performance, focusing on 5G NR (SA/NSA) and LTE-A technologies. You will bridge the gap between wireless HW development and system-level deployment, by understanding compliance with 3GPP standards and carrier requirements while maintaining industry-leading performance in power, sensitivity, and throughput.
Key Responsibilities:
Test Strategy & Execution: Define, develop, and execute comprehensive test plans for cellular modem validation across various radio access technologies (5G NR FR1/FR2, LTE-A, UMTS).
Protocol Stack Analysis: Perform deep-dive log analysis of the cellular protocol stack (L1, MAC, RLC, RRC, and NAS layers) to identify and root-cause signaling failures, handovers, and throughput drops.
System Performance Benchmarking: Characterize key performance indicators (KPIs) such as RSRP, SINR, BLER, and Peak Throughput under varying network conditions (fading, interference, and mobility).
Test Automation: Design and maintain scalable automation frameworks using Python to increase test coverage and efficiency in lab and regression environments.
Failure Analysis & Debugging: Collaborate with Firmware, Hardware, and System teams to debug complex system-level issues.
Lab Management: Operate and configure high-end cellular network emulators and RF test equipment for both signaling and non-signaling test modes.
Tools & Software Environment:
Category
Common Tools
Network Emulators
Keysight (UXM), Rohde & Schwarz (CMW500/CMX500), Anritsu (MT8000A)
Diagnostics
Qualcomm QXDM/QCAT
Automation & Data
Python (PyTest), Git
RF Analysis
Keysight 89600 VSA, Tektronix Spectrum Analyzers
Minimum Qualifications:
Mid level System Validation Engineer with min 5 years of experience
Education: B.S. or M.S. in Electrical Engineering, Telecommunications, or a related field.
Cellular Expertise: Deep understanding of 5G NR (Standalone and Non-Standalone) and LTE-A features like Carrier Aggregation (CA), MIMO, Beamforming, and VoLTE/VoWiFi.
Protocol Knowledge: In-depth familiarity with 3GPP protocols and the mobile device-to-network registration and call-flow processes.
Hands-on RF Testing: Proficiency with RF lab equipment, including Spectrum Analyzers, Signal Generators, Power Meters, and Vector Network Analyzers (VNA).
Programming: Strong proficiency in Python for test script development and data analysis.
Log Analysis: Experience using diagnostic tools such as QXDM, QCAT, Wireshark, or similar modem logging software.
Preferred Qualifications:
Background in field testing, drive testing, or Inter-Operability Testing (IOT) with infrastructure vendors (Ericsson, Nokia, Samsung). Knowledge of RF front-end components (PA, LNA, Switches, Filters) and how they impact system-level cellular performance.
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Summary:
We are seeking a highly technical Wireless System Validation Engineer to drive the qualification and optimization of our next-generation cellular products. In this role, you will be responsible for the end-to-end validation of cellular modem performance, focusing on 5G NR (SA/NSA) and LTE-A technologies. You will bridge the gap between wireless HW development and system-level deployment, by understanding compliance with 3GPP standards and carrier requirements while maintaining industry-leading performance in power, sensitivity, and throughput.
Key Responsibilities:
Test Strategy & Execution: Define, develop, and execute comprehensive test plans for cellular modem validation across various radio access technologies (5G NR FR1/FR2, LTE-A, UMTS).
Protocol Stack Analysis: Perform deep-dive log analysis of the cellular protocol stack (L1, MAC, RLC, RRC, and NAS layers) to identify and root-cause signaling failures, handovers, and throughput drops.
System Performance Benchmarking: Characterize key performance indicators (KPIs) such as RSRP, SINR, BLER, and Peak Throughput under varying network conditions (fading, interference, and mobility).
Test Automation: Design and maintain scalable automation frameworks using Python to increase test coverage and efficiency in lab and regression environments.
Failure Analysis & Debugging: Collaborate with Firmware, Hardware, and System teams to debug complex system-level issues.
Lab Management: Operate and configure high-end cellular network emulators and RF test equipment for both signaling and non-signaling test modes.
Tools & Software Environment:
Category
Common Tools
Network Emulators
Keysight (UXM), Rohde & Schwarz (CMW500/CMX500), Anritsu (MT8000A)
Diagnostics
Qualcomm QXDM/QCAT
Automation & Data
Python (PyTest), Git
RF Analysis
Keysight 89600 VSA, Tektronix Spectrum Analyzers
Minimum Qualifications:
Mid level System Validation Engineer with min 5 years of experience
Education: B.S. or M.S. in Electrical Engineering, Telecommunications, or a related field.
Cellular Expertise: Deep understanding of 5G NR (Standalone and Non-Standalone) and LTE-A features like Carrier Aggregation (CA), MIMO, Beamforming, and VoLTE/VoWiFi.
Protocol Knowledge: In-depth familiarity with 3GPP protocols and the mobile device-to-network registration and call-flow processes.
Hands-on RF Testing: Proficiency with RF lab equipment, including Spectrum Analyzers, Signal Generators, Power Meters, and Vector Network Analyzers (VNA).
Programming: Strong proficiency in Python for test script development and data analysis.
Log Analysis: Experience using diagnostic tools such as QXDM, QCAT, Wireshark, or similar modem logging software.
Preferred Qualifications:
Background in field testing, drive testing, or Inter-Operability Testing (IOT) with infrastructure vendors (Ericsson, Nokia, Samsung). Knowledge of RF front-end components (PA, LNA, Switches, Filters) and how they impact system-level cellular performance.
Show more Show less