Senior Signal Integrity Engineer – High-Speed Interfaces

InfoStride; San Francisco (CA); On-site; USD 130,000 - 190,000; Full time

Job summary

Lightmatter is seeking a Signal Integrity engineer to drive next-generation products from concept to development. You will join the Signal Integrity, Power Integrity and Packaging teams, shaping package and system architecture and analysis through lab bring-up to meet signal integrity requirements.

You will work on high-speed interfaces (PCIe, SerDes, UCIe), perform SI analyses, and collaborate with hardware designers to ensure proper impedance matching and routing.

Qualifications

• Bachelor’s degree in Electrical Engineering (or relevant field) with 5+ years of related experience; or 3 years with a Master’s; or a PhD with no experience.
• Robust professional and specialized knowledge in signal integrity analysis for high-speed interfaces.
• Proficiency in using simulation and analysis tools for signal integrity, including Ansys.
• Strong understanding of transmission line theory, impedance matching, and equalization techniques.
• Knowledge of signaling protocols for high-speed interfaces (SerDes, UCIE, etc.).
• Ensure robust signal integrity and timing for lower-speed interfaces (system clocks, SPI, I2C).
• Experience with PCB design and layout considerations for high-speed interfaces.
• Proficiency in using lab equipment for signal measurement and characterization.
• Ability to work independently with sound judgment; work reviewed at critical checkpoints.

Responsibilities

• Plan and execute moderate to complex signal integrity tasks for high-speed interfaces such as PCIe, UCIe and SerDes.
• Perform SI analysis and simulations (eye diagrams, jitter, equalization) and adapt practices to evaluate design choices.
• Collaborate with hardware designers and PCB layout engineers on projects affecting engineering functions.
• Assist in impedance matching, termination, and routing techniques; advise peers on SI matters.
• Perform detailed SI measurements and characterization using lab equipment; troubleshoot issues.
• Participate in signal integrity design reviews; present findings and suggest innovations.
• Document SI analysis results and guidelines for stakeholders with adaptable communication.

Skills

Signal integrity analysis

High-speed interfaces

Transmission line theory

Impedance matching

Equalization

Independent work

Cross-functional collaboration

Education

Bachelors in Electrical Engineering

Master’s degree

PhD

Tools

Ansys

Oscilloscope

Vector network analyzer

Job description

Lightmatter is seeking a Signal Integrity engineer to drive next-generation products from concept to development. You will join the Signal Integrity, Power Integrity and Packaging teams, shaping package and system architecture and analysis through lab bring-up to meet signal integrity requirements.

You will work on high-speed interfaces (PCIe, SerDes, UCIe), perform SI analyses, and collaborate with hardware designers to ensure proper impedance matching and routing.