Senior Signal Integrity Engineer

Langham Recruitment; California; On-site; USD 220,000 - 250,000; Full time

Benefits offered by this job

Bonus

Equity

Job summary

Langham Recruitment seeks a Senior Signal Integrity Engineer to lead the design, modelling and validation of high-speed optical interconnects for AI data centres.

You will own SI across electrical and electro‑optical paths, ensure BER targets, and drive channel architectures for PCB, package, connectors and photonics.

Responsibilities include modelling, jitter analysis, lab validation with eye diagrams, VNA, TDR and oscilloscopes; collaborate across teams and with external partners.

Job description

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