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

Zoox
Foster City, CA
On-site

Who this role is best for

A natural match if you have 10+ years of high-speed SI/PI experience and a background in automotive hardware design.

Best fit for

  • Candidates with 10+ years of high-speed SI/PI experience and a background in automotive hardware design
    — “10+ years of proven industry experience in signal and power integrity analysis for complex high-speed digital designs
  • Individuals with a strong track record in PCIe, Ethernet, MIPI, and GMSL interfaces
    — “Extensive, proven track record designing, simulating, and troubleshooting high-speed interfaces, specifically PCIe, multi-gigabit Ethernet, MIPI (CSI/DSI), and GMSL
  • Candidates who have mentored engineers and elevated SI/PI capabilities across teams
    — “[REDACTED] a technical mentor and subject matter expert, elevating the SI/PI capabilities of the entire hardware organization

Things to consider

  • The role requires deep expertise in advanced LPDDR memory interface design and simulation
    — “Deep expertise in memory interface design and simulation, with a strong focus on advanced LPDDR technologies
  • Candidates must be prepared to perform hands-on lab measurements and model correlation
    — “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

How to stand out

  • Highlight your experience with PDN analysis and multi-board system design in your resume
    — “Architect and conduct comprehensive Power Delivery Network (PDN) analysis, including DC IR drop, AC impedance modeling, and transient response analysis
  • Emphasize your work with automotive-specific protocols like A2B in your application materials
    — “Provide expert-level design guidance and validation for automotive-specific communication and audio protocols (A2B)
  • Demonstrate your mastery of SI/PI simulation tools such as Ansys HFSS/SIwave and Keysight ADS
    — “Advanced proficiency with industry-standard 2D/3D electromagnetic extraction and SI/PI simulation tools (e.g., Ansys HFSS/SIwave, Keysight ADS)
Pace · Fast PacedCollaboration · HighAutonomy · HighDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Defined SI/PI architectures
  • Conducted comprehensive PDN analysis
  • Provided expert-level design guidance
  • Performed hands-on root-cause analysis
Typical background
Signal IntegrityPower IntegrityHigh-Speed Digital Designs

Skills & requirements

Required

Signal IntegrityPower IntegrityHigh-speed Digital DesignsHigh-speed Serial LinksMemory InterfacesAutomotive Communication ProtocolsPower Delivery Network (pdn) AnalysisElectromagneticsTransmission Line TheoryCross-talkJitterAdvanced PDN Design PrinciplesHigh-speed Lab Characterization Equipment

Preferred

Automotive Industry ExperienceADAS DevelopmentAutomotive Reliability Standards

Stack & domain

Signal IntegrityPower IntegrityHigh-speed Serial LinksPcieEthernetMIPIGMSLMemory InterfacesLpddrAutomotive Audio And Sensor Bus ProtocolsA2BElectromagneticsTransmission Line TheoryCross-talkJitterPower Delivery Network (pdn) Analysis2d/3d Electromagnetic ExtractionSi/pi Simulation ToolsVector Network Analyzers (vnas)Time-domain Reflectometers (tdrs)High-bandwidth OscilloscopesHardware EngineeringElectrical EngineeringComputer EngineeringPhysics

About the role

Original posting from Zoox via Lever

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-assistance 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.

Compensation:

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.

Zoox also offers a comprehensive package of benefits, including 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 and short-term disability insurance, and life insurance.

Source: Zoox careers (Lever)

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