Lead System Application Engineer (Optical)

San Jose💼 Full-time🗓 2026-05-06 → 2026-09-26

Core

Provide expert technical support, system integration, and debugging for next-generation AI networking platforms and high-speed optical interconnects (800G/1.6T transceivers on 51.2T-class switches).

Role type

Senior System Application Engineer (Optical)

Builds

AI networking platforms and high-speed optical interconnects

Domain

AI networking, optical communications, high-speed data centers

Deliverable

client delivery

Required skills

optical transceiver architecture, DSP configuration, high-speed link debugging, AI switch architectures (Layer 1/2), system-level solution design

Preferred skills

1.6T module experience, next-gen switch experience, prior experience at leading optical/transceiver companies

Technologies

800G optical modules, 1.6T optical modules, 51.2T-class switches, DSPs

Responsibilities

Debug complex interoperability issues between switches, DSPs, and optical modules; lead customer demos and system bring-up; collaborate with optical, hardware, software, and thermal engineering teams; guide internal and customer roadmaps based on industry trends

Seniority

Senior, hands-on IC

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About Lumilens

At Lumilens we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing faster, cooler, and massively more efficient.We’re a well-funded startup backed by Mayfield and led by veterans who’ve built and scaled some of the most transformative technologies in the industry. This isn’t incremental innovation, it’s a ground-floor opportunity to rethink the optical layer from the silicon up. You’ll work alongside a team of world-class engineers solving