Signal Integrity Engineer

Ace Technologies; California (MO); On-site; USD 120,000 - 180,000; Full time

Job summary

Ace Technologies is seeking an experienced Signal Integrity Engineer to join our team in the United States. You will perform SI analysis for PCIe, UCIe, and SerDes, analyze S-parameters, eye diagrams, and jitter, and conduct SI simulations with industry-standard tools.

You will collaborate with hardware and PCB layout teams on impedance matching, routing, termination, stack-up, and via design, while conducting lab measurements with oscilloscopes and VNAs.

Qualifications

• Bachelor’s/Master’s/PhD in Electrical Engineering or related field.
• 5+ years of relevant SI experience or equivalent advanced degree experience.
• Strong knowledge of transmission line theory, impedance matching, equalization, SerDes, and UCIe.
• Hands-on experience with SI simulation tools and lab equipment.
• Strong PCB high-speed design/layout knowledge.
• Excellent troubleshooting, communication, and cross-functional collaboration skills.

Responsibilities

• Perform signal integrity analysis for high-speed interfaces including PCIe, UCIe, and SerDes.
• Analyze S-parameters, insertion/return loss, crosstalk, eye diagrams, jitter, and equalization.
• Conduct SI simulations using Ansys SIwave, HFSS, and Keysight ADS.
• Work with hardware and PCB layout teams on impedance matching, routing, termination, stack-up, and via design.
• Perform lab measurements and characterization using oscilloscopes, VNAs, TDRs, and network analyzers.
• Troubleshoot SI issues and participate in design reviews.
• Develop and document SI guidelines, analysis results, and recommendations.
• Ensure signal integrity for clocks, SPI, and I2C.

Skills

SI experience 5+ yrs

Transmission line theory

Impedance matching

Equalization

SerDes

UCIe

SI simulation tools

PCB high-speed design

Troubleshooting & communication

Education

Bachelors/Masters/PhD in Electrical Engineering

Tools

Ansys SIwave

HFSS

Keysight ADS

Job description

• Perform signal integrity analysis for high-speed interfaces including PCIe, UCIe, and SerDes.
• Analyze S-parameters, insertion/return loss, crosstalk, eye diagrams, jitter, and equalization.
• Conduct SI simulations using Ansys SIwave, HFSS, and Keysight ADS.
• Work with hardware and PCB layout teams on impedance matching, routing, termination, stack-up, and via design.
• Perform lab measurements and characterization using oscilloscopes, VNAs, TDRs, and network analyzers.
• Troubleshoot SI issues and participate in design reviews.
• Develop and document SI guidelines, analysis results, and recommendations.
• Ensure signal integrity for critical lower-speed interfaces such as clocks, SPI, and I2C.

Required Qualifications:

• Bachelor’s/Master’s/PhD in Electrical Engineering or related field.
• 5+ years of relevant SI experience (or equivalent advanced degree experience).
• Strong knowledge of transmission line theory, impedance matching, equalization, SerDes, and UCIe.
• Hands‑on experience with SI simulation tools and lab equipment.
• Strong PCB high-speed design/layout knowledge.
• Excellent troubleshooting, communication, and cross‑functional collaboration skills.

Preferred:

• Knowledge of CMOS technologies and their impact on signal integrity.
• Strong scripting/automation and debugging experience.