SI/PI Engineer

Posted: 2026-04-30

About Etched

Etched is building hardware for frontier intelligence. We co-design chips, racks, software, and manufacturing to deliver best-in-class throughput and latency across both prefill and decode workloads. Our first products are heavily focused on inference. Backed by hundreds of millions from top-tier investors and staffed by leading engineers, Etched is redefining the infrastructure layer for the fastest growing industry in history.

We are looking for a Signal Integrity and Power Integrity (SI/PI) Engineer to join our platform electrical engineering team. In this role, you will own the SI/PI methodology for high-speed PCB and system designs — from early architecture through final release — ensuring electrical margins are met across interfaces running at multi-gigabit data rates.

- Perform pre- and post-layout SI simulations for high-speed serial interfaces including PCIe Gen5/Gen6, 112G/224G Ethernet.

- Conduct channel analysis and link budget calculations; define topology constraints, trace geometry, stack-up requirements, and via optimization guidelines for PCB designers.

- Develop and maintain COM, IBIS, S-parameter, and SPICE models; correlate simulation results against lab measurements.

- Execute power delivery network (PDN) design and analysis: target impedance profiling, decoupling capacitor selection, AC/DC power analysis, and IR-drop simulation.

- Drive DFI and design rule checks for SI/PI compliance; work with layout teams in Cadence Allegro / Sigrity or Ansys SIwave.

- Collaborate with PCB design and layout engineers, and ASIC teams to define and review design guidelines early in the product lifecycle.

- Support bring-up, debug signal quality issues, and document root-cause findings with clear corrective actions.

- Develop and maintain simulation-to-hardware correlation databases to continuously improve modelling accuracy.

You may be a good fit if you have (Must-have 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).