SI Validation Engineer (Switch)

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities Perform electrical validation for high-speed interfaces, including PCIe, Ethernet 10G/25G/100G/400G, DDR4/DDR5, SATA, and USB3. Perform signal validation for low-speed and control interfaces, such as I2C, SPI, MDIO, eMMC, GMII/RGMII, and related management buses. Execute signal quality measurements using oscilloscopes, BERT, network analyzers, and other signal analysis tools. Review and interpret electrical voltage, timing, jitter, eye diagram, and compliance requirements from IC vendors, interface standards, and internal design guidelines. Plan and execute power validation for multiphase power stages, DC/DC buck converters, PSU rails, and board-level power delivery networks. Perform power integrity validation, including ripple noise measurement, transient response, power sequencing, E-load testing, and PSU evaluation. Analyze SI/PI measurement results, identify potential root causes, and provide feedback to hardware design, layout, firmware, and vendor teams. Work with hardware and layout teams to define SI/PI validation plans, test coverage, test limits, and measurement methodologies. Generate validation reports to support project development stages, issue tracking, design reviews, and second-source verification. Develop and execute basic test scripts in Linux environments to support validation, automation, and data collection. Support debugging activities when signal or power performance does not meet specifications, and validate design improvements after corrective actions. Qualifications Bachelor’s degree or above in Electrical Engineering, Electronics Engineering, or a related field. Minimum 5 years of experience in signal measurement, electrical validation, SI/PI testing, or hardware validation. Hands-on experience with oscilloscope operation, probing, soldering, and board-level measurement setup. Familiar with high-speed and low-speed interface validation, such as PCIe, Ethernet, USB, DDR, SerDes, I2C, SPI, MDIO, eMMC, GMII/RGMII. Able to independently execute signal validation based on test plans, specifications, and measurement procedures. Able to understand and interpret electrical specifications from IC vendors, including PHY, SerDes, ASIC, switch, CPU/SoC, and power IC vendors. Familiar with Linux shell commands and basic scripting for test execution or automation. Good documentation skills, with the ability to prepare clear validation reports and summarize technical findings. Able to communicate in English for technical discussions, report writing, and vendor communication. Strong problem-solving mindset and ability to work with cross-functional teams. Preferred Qualifications Hands-on experience with BERT, VNA, spectrum analyzer, electronic load, power analyzer, or automated compliance test tools. Experience with Ethernet compliance testing based on IEEE 802.3bj, 802.3bm, 802.3bs, and 802.3cd is a plus. Experience with power integrity and DC/DC converter validation is a plus. Experience supporting design bring-up, issue debugging, and production issue analysis is preferred.