Signal Integrity Engineer - High-Speed PAM4 & Hyperscale

Flint Hills Resources; Lisle (IL); On-site; USD 80,000 - 150,000; Full time

Benefits offered by this job

null

Job summary

Molex is seeking a Signal Integrity Systems Engineer to design cutting‑edge solutions for data services, coordinating with ASIC/PHY, hardware, PCB, connector, cable, firmware, and validation teams. You will work with Hyperscale customers and marketing to translate applications into best‑in‑class solutions, and you may spend time in Molex labs delivering development results.

This role targets 112G/224G PAM4 channels, SI modeling, and tools across VNA, TDR, and high‑speed oscilloscopes,

Qualifications

• Bachelor’s in Electrical Engineering or related field.
• Experience in high-speed signal integrity, channel modeling, or system validation.
• Strong understanding of transmission-line theory, S-parameters, crosstalk, loss/dispersion, reflections, and BER.
• Experience with HFSS, Keysight ADS/PLTS, Cadence Sigrity, or similar tools.

Responsibilities

• Own system-level SI analysis for high-speed channels including AEC, ACC, DAC, connectors, and PCB interconnects.
• Develop and analyze end-to-end channels for 112G and 224G PAM4 applications.
• Develop and analyze S-parameter models, correlate simulation models against VNA measurements.
• Perform IBIS-AMI and statistical/electrical simulations for high-speed PAM4 channels.
• Perform system‑level BER, eye, jitter, and SNR analysis and identify channel performance limitations.
• Correlate simulation, VNA, TDR, and oscilloscope measurements with system‑level results.
• Troubleshoot SI issues across PCB, connector, cable, package, and silicon interfaces.
• Work closely with ASIC/PHY, hardware, PCB, connector, cable, firmware, and validation teams.
• Support customer demonstrations, interoperability testing, plugfests, and technical reviews.
• Create technical reports and present SI results to customers and internal engineering teams.
• Lead root‑cause investigations and recommend design improvements.

Skills

High-speed signal integrity

S-parameters

Channel modeling

IBIS-AMI modeling

Python scripting

Oscilloscopes

VNA measurements

TDR/TDT

Education

Bachelor's in Electrical Engineering or related field

Electrical & Computer Engineering background

Tools

HFSS

Keysight ADS/PLTS

Cadence Sigrity

Python

MATLAB

VNA

Job description

Molex is seeking a Signal Integrity Systems Engineer to design cutting‑edge solutions for data services, coordinating with ASIC/PHY, hardware, PCB, connector, cable, firmware, and validation teams. You will work with Hyperscale customers and marketing to translate applications into best‑in‑class solutions, and you may spend time in Molex labs delivering development results.

This role targets 112G/224G PAM4 channels, SI modeling, and tools across VNA, TDR, and high‑speed oscilloscopes,