Senior Signal Integrity Engineer

We’re hiring a Senior Signal Integrity Engineer to lead the design, modelling, and validation of high‑speed optical link platforms for next‑generation AI data centre interconnects. You will own end‑to‑end signal integrity across electrical and electro‑optical channels—covering PCB, package, and photonic interfaces—ensuring performance at state‑of‑the‑art baud rates and tight BER targets. Key responsibilities Own SI for high‑speed links, including channel modelling, loss/reflection/crosstalk analysis, and equalisation strategy (FFE, DFE, CTLE) Define and review high‑speed channel architecture across PCB, package, connectors, and photonic interfaces Drive SI design reviews with external partners and ensure performance margin targets are met Support electrical‑to‑optical interface integrity (driver–modulator, TIA/receiver paths) Lead lab validation and bring‑up (eye diagrams, BER, jitter, VNA/TDR) Correlate simulation with measurement data and close performance gaps Support integration of photonic ICs (coupling, packaging, wirebonding, flip‑chip) Collaborate on FPGA‑based high‑speed evaluation platforms Act as technical bridge between internal teams and external partners Requirements BSc or MSc in Electrical Engineering, Photonics, or related field Strong experience in high‑speed signal integrity (100–200G+ per lane systems) Experience with channel modelling, jitter analysis, and frequency/time‑domain SI Hands‑on with equalisation techniques (FFE, DFE, CTLE) Proven lab experience (oscilloscopes, BERTs, VNAs) Experience correlating simulation with measurements Strong understanding of high‑speed PCB design and system‑level hardware What’s on offer $220K–$250K + Bonus + Equity End‑to‑end ownership of high‑speed signal integrity in optical interconnect systems Deep‑tech startup environment working at the frontier of AI data centre connectivity #J-18808-Ljbffr Langham Recruitment