Etched
SI/PI Engineer
About this role
Etched seeks a Signal Integrity and Power Integrity Engineer to design and validate high-speed PCB and system interfaces for AI inference hardware. You'll own SI/PI methodology from architecture through production, ensuring electrical margins are met on multi-gigabit serial links and power delivery networks.
What you'll do
- Perform pre- and post-layout SI simulations for PCIe Gen5/Gen6 and 112G/224G Ethernet interfaces
- Conduct channel analysis, link budgets, and define PCB topology, trace geometry, and via optimization guidelines
- Develop and maintain COM, IBIS, S-parameter, and SPICE models with lab correlation
- Design and analyze power delivery networks including target impedance, decoupling, and IR-drop simulations
- Drive design rule checks and DFI compliance; collaborate with layout and ASIC teams on guidelines
- Support hardware bring-up, debug signal quality issues, and maintain simulation-to-hardware correlation databases
What they're looking for
- Signal integrity and power integrity analysis for high-speed designs
- Cadence Sigrity, Ansys SIwave/HFSS, or Keysight ADS EDA tools
- Transmission line theory, eye-diagram analysis, and jitter decomposition
- PDN modeling and target impedance methodology
- Multi-layer PCB stack-up design and controlled-impedance routing
- Lab instrumentation: VNA, TDR, BERT, oscilloscope techniques
- Python or MATLAB scripting for simulation automation
- Data center, AI accelerator, or HPC hardware experience
Benefits
- Medical, dental, and vision coverage with $500/month waiver credit
- $2,000/month housing subsidy for walking distance to office
- Relocation support to San Jose (Santana Row)
- Wellness benefits covering fitness and mental health
- Daily lunch and dinner provided in office
- Unlimited compute budget subject to ROI justification
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Etched
Etched builds AI inference hardware, designing and manufacturing complex mechanical and electrical components for data center systems. The company is hiring mechanical engineers, PCB designers, hardware verification engineers, and software engineers to develop manufacturing processes, circuit boards, verification infrastructure, and internal tools across its hardware and operations.
- Website
- etched.com
Likely interview questions
- Walk us through your experience with SI simulations for high-speed serial interfaces—what tools have you used most, and how do you correlate simulation results to lab measurements?
- Describe your approach to PDN design and target impedance profiling. How do you select decoupling capacitors and validate your AC/DC power analysis?