SI Hardware Engineer

SI Hardware Engineer - Up to $330K (base salary + bonus + stock)Position OverviewWe are seeking an experienced Signal Integrity (SI) Hardware Engineer to join our high-speed digital design team. The role focuses on ensuring reliable high-speed signal performance across PCBs, connectors, cables and backplanes through simulation, measurement, and cross-functional collaboration. The ideal candidate will lead SI analysis and mitigation activities, use Ansys HFSS for electromagnetic and channel modeling, and work closely with PCB, system, and firmware teams to deliver production-ready, high-performance hardware.QualificationsBachelors or Masters degree in Electrical Engineering or Computer Engineering.8+ years of experience in signal integrity and high-speed digital design.Demonstrated expertise in Signal Integrity, high-speed digital design principles, and hands-on experience using Ansys HFSS for SI/EM modeling.Strong understanding of electromagnetics, transmission line theory, impedance control, crosstalk analysis, and jitter/eye diagram analysis.Knowledge of SI tools such as HyperLynx, Ansoft, Keysight ADS, Cadence Sigrity, CST, Matlab, Spice and SI simulation workflows.Experience with test & measurement equipment including oscilloscopes, VNAs, TDR, and spectrum analyzers for characterization and validation.Excellent written and verbal communication skills, ability to work in cross-functional teams, and strong problem-solving aptitude.It is a plus if you have:Experience with Power Integrity analysis, PDN design, decoupling/bypass strategies, and EMC/EMI mitigation.Familiarity with PCB design, PCB stack-up design, material selection (FR4/Rogers), and backplane design.Experience with SerDes protocols, PCIe, USB, Ethernet, HDMI, LVDS, MIPI and DDR design (DDR3/DDR4/DDR5).Practical experience with FPGA integration, LabView, Python, test automation, and hardware validation/system integration testing.Skills in S-parameter measurement, TDR analysis, oscilloscope/VNA use, connector and cable characterization, and root cause analysis.Understanding of DFM/DFT practices, JTAG, thermal analysis, and production test considerations.Key ResponsibilitiesPerform signal integrity analysis and simulation for high-speed digital interfaces using tools such as Ansys HFSS and other SI simulation packages.Model and analyze channel behavior (transmission lines, connectors, cables, backplanes) and develop mitigation strategies for losses, reflections, crosstalk, and impedance discontinuities.Design and validate PCB stack-ups, material selection (FR4, Rogers), and controlled impedance traces to meet signal and power requirements.Conduct TDR, S-parameter, VNA, oscilloscope and other test & measurement activities to characterize channels and verify models against measurements.Work on power integrity (PDN) issues and collaborate with power engineers on decoupling/bypass strategies and EMC/EMI mitigation where required.Analyze jitter, eye diagrams, and BER for SerDes, PCIe, USB, Ethernet, HDMI and memory interfaces (DDR3/DDR4/DDR5); recommend and implement signal conditioning or layout changes.Support connector and cable characterization and define interface specifications and test plans for manufacturing and system integration testing.Collaborate with FPGA/firmware teams for system integration, JTAG/DFT/DFM considerations, and hardware validation activities.Lead root cause analysis for field and lab failures, develop corrective actions, and document findings and procedures.Mentor junior engineers, contribute to design reviews, and maintain design and test documentation to support product development and production handoff.BenefitsHealth, dental, and vision insuranceLife and disability insurance FSA and HSA401k with 6% matchESPPFlexible/Unlimited PTOAnnual bonus from 15-30% (depending on your level)VERY generous stocks!