Job Description

Senior Signal Integrity Engineer

Santa Barbara, CA

$220,000–$250,000 + bonus + equity

We're seeking a Senior Signal Integrity Engineer to lead the design, modelling, and validation of high-speed optical interconnects for next-generation AI data centres.

You'll own signal integrity across electrical and electro-optical channels, ensuring reliable performance across PCB, package, connector, and photonic interfaces while meeting demanding BER and high-speed performance targets.

Key Responsibilities

• Lead signal integrity for high-speed links, including channel modelling, loss, crosstalk, jitter, and equalisation (FFE, DFE, CTLE).
• Define and optimise channel architectures across PCB, package, connectors, and photonic interfaces.
• Drive SI design reviews and collaborate with internal teams and external partners.
• Support electrical-to-optical interfaces, including driver, modulator, and receiver paths.
• Guide high-speed PCB design and lead lab validation using eye diagrams, BER, VNA, TDR, and oscilloscopes.
• Correlate simulation with measurement data and support photonic IC integration.
• Collaborate on FPGA-based evaluation platforms.

Requirements

• Bachelor's or Master's degree in Electrical Engineering, Photonics, or a related field.
• Experience with signal integrity in 100–200G+ per-lane systems.
• Strong background in channel modelling, jitter analysis, and SI simulation.
• Hands-on experience with FFE, DFE, CTLE, BERTs, VNAs, and oscilloscopes.
• Solid understanding of high-speed PCB design and hardware integration.

What's on Offer

• $220K–$250K base + bonus + equity
• End-to-end ownership of signal integrity for next-generation optical interconnects
• Join a deep-tech startup developing cutting-edge AI data centre connectivity

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