Staff Signal Integrity and Power Integrity Engineer (SI/PI)

Zoox; Foster City (CA); On-site; USD 259,000 - 311,000; Full time

Benefits offered by this job

Zoox Stock Appreciation Rights

Amazon RSUs

health insurance

long‑term care insurance

long‑term disability insurance

short‑term disability insurance

life insurance

paid time off (e.g. sick leave,vacatio

bereavement

Job summary

Zoox is seeking a Staff Signal and Power Integrity Engineer to own end-to-end SI/PI sign-off for next-gen robotaxi hardware. You will define architectures, collaborate with design and layout teams, and ensure robust PDN and high‑speed link performance across multi-board systems.

The role requires 10+ years in SI/PI, deep expertise with PCIe/Ethernet/MIPI/GMSL, LPDDR memory, and automotive protocols. You will mentor engineers and help set company-wide simulation practices.

Qualifications

• Ten-plus years of proven SI/PI experience in complex high-speed designs.
• Experience with PCIe, multi-gigabit Ethernet, MIPI CSI/DSI, and GMSL.
• Expertise in LPDDR memory interfaces and automotive protocols like A2B.

Responsibilities

• Define SI/PI architectures and constraints for high-density PCBs.
• Lead cross-functional hardware design, layout, and integration teams.
• Sign off on PDN, impedance, timing, and recovery analyses.
• Mentor engineers and drive tool/simulation methodologies.

Skills

SI/PI architecture

High-speed PCB design

Lab characterization

Technical leadership

Automotive electronics

Education

Bachelor’s, Master’s, or PhD in Electrical Engineering

Tools

Ansys HFSS

SIwave

Cadence Sigrity

Keysight ADS

Siemens EDA/HyperLynx

Job description

We are seeking a highly skilled and visionary Staff Signal and Power Integrity (SI/PI) Engineer to join our advanced hardware engineering team. In this role, you will be the definitive technical expert responsible for ensuring the signal quality, timing, and power delivery robustness of our most complex, next‑generation robotaxi electronic systems. As a technical pillar within the organization, you will define overarching SI/PI architectures, establish company-wide simulation methodologies, guide electrical design and layout teams, and own the end-to-end sign‑off for cutting‑edge high‑speed interfaces.

In This Role, You Will

• Lead the SI/PI architecture and define constraints for next‑generation, high‑complexity, high‑density printed circuit boards (PCBs) and overall system design.
• Collaborate at an architectural level with hardware design, silicon vendors, PCB layout, and mechanical engineering teams to define layer stack‑ups, routing strategies, component placement, and power delivery architectures.
• Analyze, optimize, and sign off on advanced high‑speed serial links (PCIe, Ethernet, MIPI, GMSL) and memory interfaces (LPDDR).
• Provide expert‑level design guidance and validation for automotive‑specific communication and audio protocols (A2B).
• Architect and conduct comprehensive Power Delivery Network (PDN) analysis, including DC IR drop, AC impedance modeling, and transient response analysis to ensure stable power delivery across complex multi‑board systems.
• Drive the development of advanced SI/PI routing rules, simulation methodologies, automation scripts, and sign‑off processes for the hardware engineering department.
• Tackle the most complex, unprecedented signal and power integrity challenges, performing hands‑on root‑cause analysis, lab measurements, and correlating simulation models with real‑world testing.
• Act as a technical mentor and subject matter expert, elevating the SI/PI capabilities of the entire hardware organization and guiding junior to senior engineers.

Qualifications

• Bachelor’s, Master’s, or Ph.D. in Electrical Engineering, Computer Engineering, Physics, or a closely related technical field.
• 10+ years of proven industry experience in signal and power integrity analysis for complex high‑speed digital designs.
• Extensive, proven track record designing, simulating, and troubleshooting high‑speed interfaces, specifically PCIe, multi‑gigabit Ethernet, MIPI (CSI/DSI), and GMSL, through multiple successful product lifecycles.
• Deep expertise in memory interface design and simulation, with a strong focus on advanced LPDDR technologies.
• Familiarity with automotive audio and sensor bus protocols, such as A2B.
• Advanced proficiency with industry‑standard 2D/3D electromagnetic extraction and SI/PI simulation tools (e.g., Ansys HFSS/SIwave, Keysight ADS, Cadence Sigrity, or Siemens EDA/HyperLynx).
• Mastery of electromagnetics, transmission line theory, cross‑talk, jitter, and advanced PDN design principles.
• Expert‑level hands‑on experience with high‑speed lab characterization equipment, including Vector Network Analyzers (VNAs), Time‑Domain Reflectometers (TDRs), and high‑bandwidth oscilloscopes.

Bonus Qualifications

• Direct experience in the automotive industry, particularly developing hardware for advanced driver‑assist​ance systems (ADAS) or autonomous vehicles.
• Deep understanding of automotive reliability standards, compliance requirements, and designing for harsh environmental operating conditions.
• Extensive experience with high‑layer‑count HDI (High‑Density Interconnect) PCB design, advanced packaging, and pushing the boundaries of modern fabrication capabilities.
• Proven ability to influence technical strategy, drive cross‑functional alignment, and clearly communicate complex technical trade‑offs to executive and non‑SI/PI stakeholders.

$259,000 - $311,000 a year

Base Salary Range

There are three major components to compensation for this position: salary, Amazon Restricted Stock Units (RSUs), and Zoox Stock Appreciation Rights. A sign‑on bonus may be offered as part of the compensation package. The listed range applies only to the base salary. Compensation will vary based on geographic location and level. Leveling, as well as positioning within a level, is determined by a range of factors, including, but not limited to, a candidate's relevant years of experience, domain knowledge, and interview performance. The salary range listed in this posting is representative of the range of levels Zoox is considering for this position.

• paid time off (e.g. sick leave, vacation, bereavement)
• unpaid time off
• Zoox Stock Appreciation Rights
• Amazon RSUs
• health insurance
• long‑term care insurance
• long‑term disability insurance
• short‑term disability insurance
• life insurance