Job Description

Location(s)

Wuhan, Hubei

Company

Molex

Career Field

Engineering

Job Number

185654

Your Job

The Principal SI/PI Engineer is the company’s technical authority for signal and power integrity in high-speed interconnect systems.

This role owns the end-to-end SI/PI architecture across die, package, PCB, connector, and system levels, drives resolution of the most complex integrity challenges, and defines methodologies, standards, and technology roadmap for next-generation interconnects for 200G/lane application.

What You Will Do

1. Define and maintain company-level SI & PI design methodologies, guidelines, and review processes.
2. Act as technical decision owner for critical SI/PI issues and root-cause analysis.
3. Lead full-channel SI modelling and optimization from Die → Package → PCB → Connector → System
4. Own SI analysis for 28G–224G SerDes, including insertion loss, crosstalk, eye diagram, jitter, and BER
5. Ensure compliance with OIF-CEI, IEEE 802.3 and other high-speed interface standards
6. Define and review PDN architecture at package, PCB, and system levels
7. Lead PI analysis including impedance, transient response, and target impedance compliance
8. Correlate power noise impact on high-speed SerDes and system jitter margin
9. Correlate simulation models with lab measurements (TDR, VNA, Scope)
10. Drive model-to-hardware convergence to improve prediction accuracy
11. Drive advanced research in new materials, advanced packaging, CPO, and next-gen interconnect topology
12. Serve as the SI/PI technical interface for key customers and strategic programs

Who You Are (Basic Qualifications)

• Cross-functional collaboration across IC, package, PCB, and system teams
• Significant technical influence on company SI/PI strategy
• Master’s degree or above in Electrical Engineering, Electromagnetics, Microwave, or related fields.
• 10+ years of experience in high-speed interconnect, SI/PI engineering
• Expert-level proficiency with Cadence Sigrity, HFSS, ADS, CST, HSPICE
• Hands-on ownership of 112G+ SerDes designs, bring-up, or issue resolution
• Deep understanding of EM theory, transmission lines, and SI/PI standards
• Ability to convert complex SI problems into executable engineering rules
• Strong technical leadership and cross-team communication
• Candidates with experience in SI/PI design and debugging of high-speed optical modules such as 200G/400G/800G/1.6T will be given priority consideration.

At Koch companies, we are entrepreneurs. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic location. If you have questions, please speak to your recruiter about the flexibility and detail of our compensation philosophy.

Who We Are

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At Koch, employees are empowered to do what they do best to make life better. Learn how our business philosophy helps employees unleash their potential while creating value for themselves and the company.

Additionally, everyone has individual work and personal needs. We seek to enable the best work environment that helps you and the business work together to produce superior results.