Signal Integrity Engineer – Memory Interface

Apple, Inc.; Austin (TX); On-site; USD 170,000 - 210,000; Full time

Job summary

Apple, Inc. in Austin, TX is seeking a senior Signal Integrity Engineer for memory interfaces on Apple SoCs. You will own SI for the memory subsystem from package to board, validate DDR/LPDDR interfaces, and collaborate with silicon, design, and test teams to optimize yield and timing.

The role requires hands-on modeling, electrical extraction, and lab validation using VNA, TDR, scope, and other lab tools. Strong Python skills and experience with script-based automation are highly valued.

Qualifications

• BS + 10 years of industry experience.
• MSEE + 8 years of industry experience and/or Ph.D. preferred.
• Familiar with signal and power integrity issues of memory interfaces.
• Experience with product package/board design and PI/SI methodology development.
• Lab correlation/validation of simulation results is a plus.
• Strong academic background.
• Familiar with lab equipment: VNA, TDR, oscilloscope, spectrum analyzer.
• Solid knowledge of 3D/2D EM simulations and transmission line theory.
• Proficient in Python and able to leverage AI coding assistants.

Responsibilities

• Conduct end-to-end SI/PI simulations for memory system including channels and power delivery networks to meet tight timing and voltage specs.
• Provide feedback and guidelines to silicon floorplan, package, system design.
• Set optimal IO settings and design guidelines for cross-functional teams.
• Perform feasibility studies for next-generation signaling schemes.
• Correlate simulations with silicon measurements.

Skills

Memory interface SI/PI

Python

DDR/LPDDR knowledge

Generative AI coding

Lab equipment familiarity

EM simulation fundamentals

Education

Bachelor's degree in Electrical Engineering

Master of Science in Electrical Engineering (MSEE)

PhD (preferred)

Tools

VNA

TDR

Oscilloscope

Spectrum analyzer

3D/2D EM simulation tools

Job description

Signal Integrity Engineer - Memory Interface

In this position, you will work with the team that develops SOCs used within Apple's mobile devices. You will be specifically responsible for memory interface signal integrity for Apple SoCs, covering the span from package to board. Prior design and modeling experience with DDR or LPDDR interfaces are a must-have.

Description

You will work on electrical and physical design of memory systems. Work on electrical extraction and validation of package and MLB. Work with circuit and controller team to optimize memory system design. Work on SI and PI modeling, simulation, and characterization memory interface. Develop and execute test plans to validate signal and power integrity. Work with product engineering and system engineering to debug and to improve product yield.

Responsibilities

• Conduct end-to-end signal integrity and power integrity simulation studies of memory system including modeling of channels and power delivery networks of die/interposer/PKG/PCB/PMU to meet tight timing and voltage spec.
• Provide feedbacks and guidelines to silicon floorplan, package, system design, and other cross-functional teams.
• Provide optimal IO settings and design guideline to cross-functional teams.
• Perform feasibility study for next generation of signaling scheme.
• Perform correlation between simulation and silicon measurement.

Minimum Qualifications

• BS + 10 years of industry experience.

Preferred Qualifications

• MSEE + 8 years of industry experience and or Ph.D. preferred.
• We are looking for someone who is familiar with signal and power integrity issues of memory interfaces.
• Prior experience working with actual product package/board design and analysis, PI/SI methodology development, and lab correlation/validation of the simulation results.
• Excellent academic background.
• Familiar with lab equipment, such as: VNA, TDR, real-time scope, spectrum analyzer, etc.
• Strong fundamentals in 3D/2D EM simulation tools and transmission line theory.
• Proficient in Python with strong foundational coding skills and expertise in leveraging generative AI coding assistants to enhance productivity.

Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant

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Apple accepts applications to this posting on an ongoing basis.