SI/PI Engineer

The role

The SI/PI Engineer will own the SI/PI methodology for high-speed PCB and system designs. This includes performing simulations, conducting channel analysis, and executing power delivery network design.

What you will do

• Perform pre- and post-layout SI simulations for high-speed serial interfaces.
• Conduct channel analysis and link budget calculations.
• Define topology constraints, trace geometry, stack-up requirements, and via optimization guidelines.
• Develop and maintain COM, IBIS, S-parameter, and SPICE models.
• Correlate simulation results against lab measurements.
• Execute power delivery network design and analysis.
• Drive DFI and design rule checks for SI/PI compliance.
• Collaborate with PCB design, layout, and ASIC teams.
• Support bring-up and debug signal quality issues.
• Develop and maintain simulation-to-hardware correlation databases.

Required qualifications

• B.S. or M.S. in Electrical Engineering or a closely related discipline.
• 5+ years of hands-on SI/PI experience on high-speed designs (>1 Gbps serial links or DDR4/5 and HBM3/4 memory interfaces).
• Proficiency with industry SI/PI EDA tools (Cadence Sigrity, Ansys SIwave/HFSS, Keysight ADS, or equivalent).
• Strong understanding of transmission line theory, return-loss, insertion-loss, crosstalk, eye-diagram analysis, and jitter decomposition.
• Experience with PDN modelling, target impedance methodology, and DC IR analysis.
• Working knowledge of multi-layer PCB stack-up design and controlled-impedance trace routing.
• Hands-on lab skills: S-parameter measurements with VNA, time-domain reflectometry (TDR), BERT operation, and oscilloscope probing techniques

Nice to have

• Prior work in data center, AI/ML accelerator, networking, or high-performance computing (HPC) hardware environments.
• Experience scripting automated SI/PI simulation flows using Python or MATLAB

Benefits

• Medical, dental, and vision packages with generous premium coverage
• $500 per month credit for waiving medical benefits
• Housing subsidy of $2,500 per month for those living within walking distance of the office
• Relocation support for those moving to San Jose (Santana Row)
• Various wellness benefits covering fitness, mental health, and more
• Daily lunch and dinner in our office
• Unlimited compute budget subject to ROI justification

About the company

Etched is building hardware for frontier intelligence by co-designing chips, racks, software, and manufacturing. The company is a fully in-person team in San Jose and Taipei.