RF test Engineer

Siri InfoSolutions Inc; California (MO); On-site; USD 90,000 - 130,000; Full time

Job summary

Siri InfoSolutions Inc. is seeking an RF Test Engineer in Fremont, CA to execute RF OTA tests and validate performance across sub-6 GHz and mmWave bands.

The role requires hands-on lab experience with chamber environments, calibration procedures, and comprehensive measurements to support regulatory filings. Responsibilities include test execution, plan compliance, data analysis, and direct coordination with project teams to package validation data for FCC/CE/ISED submissions.

Qualifications

• Bachelor’s degree in EE/telecom or closely related field required.
• 2–5+ years hands-on RF OTA testing in a lab environment.
• Master’s degree with RF/EM focus preferred.

Responsibilities

• Configure, calibrate, and operate OTA test chambers across FR1 and FR2 bands.
• Perform radiated measurements: TRP, TIS, EIRP, EIS, and MIMO OTA throughput.
• Validate satellite positioning OTA sensitivity via A-GNSS tests.
• Investigate Desense sources to identify internal platform noise.
• Maintain chamber logs and perform range calibrations for repeatability.

Skills

Test execution

System validation

Problem solving

Documentation

Communication

Education

Bachelor's Degree in Electrical Engineering, Telecommunications, or a highly related technical discipline

Master's Degree with an RF/Electromagnetics focus (preferred)

Tools

Keysight UXM 5G

Rohde & Schwarz CMX500 / CMW500

Anritsu MT8000A

ETS-Lindgren EMQuest

R&S AMS32

Python

Job description

Job Title: RF Test Engineer

Location: Fremont , California

Onsite/ Remote: Day 1 Onsite at customer location

Core Responsibilities

1. Test Execution & System Validation

• Configure, calibrate, and operate multi-axis OTA anechoic test chambers (e.g., ETS-Lindgren AMS systems) across FR1 (Sub-6 GHz) and FR2 (mmWave) frequency ranges.
• Perform comprehensive radiated measurements including TRP, TIS, EIRP, EIS, and MIMO OTA throughput testing.
• Validate satellite positioning performance by executing A-GNSS (GPS/Glonass/Galileo) OTA sensitivity evaluations.
• Conduct systematic RF Desensitization (Desense) investigations to isolate internal platform noise (e.g., from display panels, high-speed digital buses, or power supplies) degrading receiver performance.
• Maintain chamber verification logs, performing routine range calibrations (path loss measurements using standard gain horn antennas) to ensure measurement repeatability and system accuracy.

2. Test Plan Compliance & Certification

• Execute testing matrices in strict accordance with CTIA Test Plan for Wireless Device Over-the-Air Performance, 3GPP Technical Specifications (TS 38.521 / 38.151), and specific North American wireless operator requirements.
• Analyze test data against strict regulatory and carrier acceptance limits, identifying and logging edge-case failures.
• Interface directly with the Telecommunications Certification Body (TCB) team and project managers to package validation data for formal regulatory submissions (FCC, CE, ISED).

Technical Requirements & Qualifications

Education & Experience

• Bachelor's Degree in Electrical Engineering, Telecommunications, or a highly related technical discipline (Master's Degree with an RF/Electromagnetics focus preferred).
• 2 to 5+ years of direct, hands-on experience in an RF laboratory environment specifically executing OTA testing.

Technical Skills & Instrumentation Knowledge

• Chamber Architectures: Deep familiarity with conical-cut and great-circle-cut anechoic chamber testing geometries.
• Wireless Protocols: Solid baseline knowledge of 5G NR (SA/NSA), LTE Advanced, Wi-Fi 7 / 6E (802.11be/ax), Bluetooth, and UWB physical layer parameters.
• RF Test Equipment: Hands-on operational mastery of network analyzers, spectrum analyzers, and radio communication testers (e.g., Keysight UXM 5G, Rohde & Schwarz CMX500 / CMW500, Anritsu MT8000A).
• Software & Automation: Experience utilizing automated lab software suites (e.g., ETS-Lindgren EMQuest, R&S AMS32). Proficiency in Python for parsing .csv data files and interfacing with instrument APIs is highly preferred.
• Foundational Knowledge: Solid grasp of Smith charts, impedance matching, polarization alignment, Friis transmission equations, and measurement uncertainty calculations.

Soft Skills & Workplace Competencies

• Analytical Problem Solving: A methodical approach to isolating variables when troubleshooting system anomalies or uncharacteristic device failures inside the chamber.
• Meticulous Documentation: Strong attention to detail when logging hardware configurations, test settings, and EUT (Equipment Under Test) software build versions.
• Communication: Ability to clearly explain complex radiated failures and spatial pattern nulls to non-RF internal partners.