Senior System Signal Integrity Engineer

OSI Engineering; Cupertino (CA); Hybrid; USD 78,000 - 88,000; Full time

Job summary

OSI Engineering, partnering with our client, seeks a Senior System Signal Integrity Engineer to support next-generation consumer devices. You will work on high-speed digital designs for Mac products, addressing system-level SI challenges and collaborating with world-class engineering teams. The role focuses on SerDes optimization, NRZ/PAM signaling, and SI validation using industry-standard tools.

A Ph.D. with 3+ years or a Master\'s with 5+ years of experience is preferred; hybrid work in

Qualifications

• Ph.D. preferred with 3+ years of relevant industry experience or Master\'s degree with 5+ years of relevant industry experience.
• Strong system-level Signal Integrity experience supporting high-speed digital designs.
• Deep understanding of SerDes architectures and signaling technologies (NRZ, PAM3, PAM4).
• Proficiency with SI tools and scripting is preferred.

Responsibilities

• Perform system-level SI design, analysis, and validation for next-generation Mac products.
• Analyze and optimize high-speed SerDes links with various equalization techniques.
• Support NRZ, PAM3, and PAM4 signaling technologies.
• Conduct statistical channel analysis and validate end-to-end link performance.
• Review PCB/flex layouts for impedance control and return paths.
• Develop and evaluate interconnect models and run SI simulations.
• Create scripts to improve engineering workflows.
• Generate clear technical documentation and collaborate with cross-functional teams.

Skills

Signal Integrity

SerDes architectures

High-speed interfaces

Programming/Scripting

Cross-functional collaboration

Documentation

Education

Ph.D. preferred

Master's degree

Tools

HFSS

Keysight ADS

SIwave

PowerSI

IBIS-AMI

HSPICE

SPECTRE

AMS

Simplis

Job description

OSI Engineering is partnering with our client to find an experienced Senior System Signal Integrity Engineer to support the development of next-generation consumer device products. This is an exciting opportunity to work on cutting-edge high-speed digital designs, collaborating with world-class engineering teams responsible for delivering industry-leading hardware.

If you're passionate about signal integrity, high-speed interfaces, and solving complex system-level challenges, this role offers the opportunity to make a direct impact on products used by millions around the world.

Responsibilities

• Perform system-level Signal Integrity (SI) design, analysis, and validation for next-generation Mac products.
• Analyze and optimize high-speed SerDes links, including transmitter and receiver equalization techniques such as FFE, CTLE, DFE, VGA gain, CDR behavior, link training algorithms, and internal eye margining.
• Support signaling technologies including NRZ, PAM3, and PAM4.
• Conduct statistical channel analysis across multiple channel variants and validate end-to-end link performance.
• Review PCB and flex layouts, including trace routing, impedance control, and return path analysis.
• Develop and evaluate interconnect models using S-parameters, W-elements, and other modeling techniques.
• Perform channel modeling and simulation using industry-standard SI tools.
• Support compliance testing and passive channel/component characterization for high-speed interfaces.
• Perform system-level transient analysis using IBIS-AMI, HSPICE, Spectre, AMS, Simplis, and related simulation models.
• Utilize measurement equipment including Vector Network Analyzers (VNA) and Time Domain Reflectometry (TDR) for validation, calibration, and de-embedding.
• Develop scripts using Matlab, Python, Perl, or similar languages to improve engineering workflows.
• Create clear technical documentation and collaborate effectively with cross-functional engineering teams.

Requirements

• Strong system-level Signal Integrity experience supporting high-speed digital designs.
• Deep understanding of SerDes architectures, including:
• FFE
• CTLE
• DFE
• VGA Gain
• Clock Data Recovery (CDR)
• Link training algorithms
• Internal eye margining
• Experience working with NRZ, PAM3, and PAM4 signaling technologies.
• Expertise with industry-standard interfaces including:
• USB4
• USB3.1 / USB2
• DisplayPort
• HDMI
• MIPI
• Ethernet
• SD
• Experience supporting parallel interfaces such as:
• DDR
• LPDDR
• GDDR
• NAND
• Other synchronous interfaces
• Strong understanding of transmitter and receiver compliance testing.
• Experience with PCB materials, flex materials, connector design, and high-speed interconnect design.
• Proficiency with SI simulation tools such as:
• Ansys HFSS
• Keysight ADS
• SIwave
• PowerSI
• Working knowledge of:
• IBIS-AMI
• HSPICE
• Spectre
• AMS
• Simplis
• Experience using laboratory measurement equipment including VNA and TDR is preferred.
• Programming or scripting experience using Matlab, Python, Perl, or similar languages is preferred.
• Excellent communication, documentation, and problem-solving skills.
• Ability to work independently while collaborating effectively with cross-functional engineering teams.

Education

• Ph.D. preferred with 3+ years of relevant industry experience, or
• Master's degree required with 5+ years of relevant industry experience.

Location

Hybrid — Cupertino, CA or Austin, TX

Duration

12-month contract

Salary Range

$78-$88 DOE