Signal and Power Integrity Engineer (SI/PI)

Apple; Cupertino (CA); On-site; USD 95,000 - 135,000; Full time

Job summary

Apple is seeking an early career signal and power integrity (SI/PI) engineer in Cupertino to support architectural exploration and product development. The role emphasizes SI/PI for high-speed links (PCIe, USB, DP, MIPI) and low-speed buses, plus PDN analysis.

You will work with cross-functional teams to define I/O and power architecture, triage SI/PI issues during validation, and help deploy SI/PI test methodologies across manufacturing.

Qualifications

• BS/MS/PhD in EE or equivalent.
• Solid EE fundamentals and problem solving.
• Knowledge of high-speed and low-speed I/O interfaces.
• Power integrity modeling, simulation, and lab correlation.
• Familiarity with DC-DC regulator design principles, modeling, and troubleshooting.
• Proficiency with SI/PI simulation tools (Cadence/Sigrity, ADS/Spice, Ansys HFSS, CST).
• Strong programming background is a plus.
• Hands-on hardware characterization, validation, and failure analysis with lab equipment.

Responsibilities

• System-level SI simulation and design evaluation, including PCB stackup, placement/routing, and IO selection.
• System-level PI simulation and design evaluation, including power/ground plane optimization and decoupling strategies.
• Define IO and power architecture and silicon/module/interconnect specs with cross-functional teams.
• Triage, debug, root cause, and fix SI/PI issues in product integration with validation teams.
• Develop and deploy SI/PI focused factory test methodologies and flows.

Skills

SI/PI engineering

High-speed interfaces

Power integrity

PCB design knowledge

Programming basics

Education

BS/MS/PhD in EE or equivalent

Tools

Cadence/Sigrity

ADS/Spice

Ansys HFSS

CST

Job description

Summary

We’re a diverse collection of thinkers and doers, continually reimagining what’s possible to help us all do what we love in new ways. The people who work here have reinvented entire industries with the Mac, iPhone, iPad, and Apple Watch, as well as with services, including iTunes, the App Store, Apple Music, and Apple Pay. And the same passion for innovation that goes into our products also applies to our practices — strengthening our commitment to leave the world better than we found it! We are seeking an early career signal and power integrity (SI/PI) engineer with outstanding track record in supporting both architectural exploration and product development. An ideal candidate should be highly skilled in all major aspects of SI/PI, including high speed links (e.g. PCIe, USB, DP, MIPI, etc.), low speed buses (e.g. SPMI, SPI, I2C, I2S, SoundWire, etc.), and system power delivery network (PDN) analysis. You will play an integral role in developing innovative technologies and new products.

Description

• System-level SI simulation and design evaluation, including but not limited to PCB stackup, placement/routing, connector and analog/digital IO selection.
• System-level PI simulation and design evaluation, including but not limited to power/ground plane optimization, decoupling cap strategy, transient/frequency-domain noise analysis, EMI mitigation, and noise immunity enhancement.
• Work with cross-functional teams to define I/O and power architecture, as well as specs of silicon, module, and interconnects.
• Work with validation, testing and compliance teams to triage, debug, root cause, and fix SI/PI related issues in product integration.
• Drive the development and deployment of SI/PI focused factory test methodologies and flows.

Minimum Qualifications

BS/MS/PhD in EE or equivalent.

Preferred Qualifications

• Solid EE fundamentals and excellent problem solving skills.
• In-depth knowledge in electrical signaling of common high-speed and low-speed I/O interfaces.
• Protocol level familiarity is a plus.
• Strong background in power integrity modeling, simulation, and lab correlation.
• Familiarity with DC-DC regulator design principles, modeling, and troubleshooting.
• Proficiency in SI/PI simulation tools such as Cadence/Sigrity, ADS/Spice, Ansys HFSS, CST, etc.
• Strong programming background is a plus.
• Hands-on experience in hardware characterization, validation, and failure analysis with lab equipment such as VNA, TDR, Oscilloscope, spectrum analyzer, etc.
• Compliance testing experience on SerDes links is a plus.