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Lead System Application Engineer (Optical)

Lumilens· Product
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San JoseFull-timePosted 2mo ago

About the role

We are seeking a highly skilled System Application Engineer (Optical) to support next‑generation AI networking platforms and high‑speed optical interconnects, working with 800G and 1.6T transceivers on large-scale switches.

Responsibilities

  • Provide expert technical support for 51.2T and future‑generation switch architectures, with a strong focus on 800G and 1.6T optical transceivers.
  • Serve as the primary customer-facing technical lead, understanding customer requirements and delivering tailored system-level solutions.
  • Debug and resolve complex interoperability issues involving AI networking switches, DSPs, and high‑speed optical modules.
  • Lead customer demos, evaluations, and hands-on system bring-up, including switch configuration, link validation, and performance tuning.
  • Collaborate cross-functionally with optical, hardware, software, mechanical, and thermal engineering teams to ensure seamless product integration.
  • Stay current with industry standards and trends in AI networking, optical transceivers, and switch architectures to guide internal and customer roadmaps.

Qualifications

  • Bachelor’s degree or higher in Electrical Engineering or a related technical field.
  • Strong understanding of optical transceivers, including architecture, configuration, and performance characteristics.
  • Extensive hands-on experience with DSP bring-up, transceiver configuration, and high-speed link debugging.
  • In-depth familiarity with AI networking switch architectures and Layer 1/Layer 2 configurations.
  • Experience working with 800G optical modules and 51.2T-class switches (experience with 1.6T modules or next-gen switches is a strong plus).
  • Previous experience at a leading optical transceiver or networking systems company is highly preferred.
  • Excellent analytical, communication, and customer-facing skills, with the ability to translate complex issues into actionable insights.
  • Strong ability to work independently while effectively collaborating with global, cross-functional teams.

Skills

Required:Optical transceiversDSP bring-upAI networking switch architectures

Benefits

  • Competitive salary and significant equity compensation in a rapidly growing, well-funded startup.
  • Comprehensive health, dental, and vision insurance.
  • Flexible time off policy.
  • Direct impact on groundbreaking technology shaping the future of AI and data centers.
  • Opportunity to work with a highly experienced and collaborative team.
  • Dynamic and innovative work environment
  • Opportunity for rapid career growth
  • All qualified applicants will receive consideration for employment without regard to race, color, religion, religious creed, sex, national origin, ancestry, age, physical or mental disability, medical condition, genetic information, military and veteran status, marital status, pregnancy, gender, gender expression, gender identity, sexual orientation, or any other characteristic protected by local law, regulation, or ordinance.
Last updated Aug 8, 2026. Interested? Apply on the company site.

About Lumilens

Connectivity Platform for AI

Lumilens provides next-gen photonic interconnects for massively scaling out – and scaling up – AI compute infrastructure.

Photonic InterconnectsNext-Gen ManufacturingSystem-level knowledgeLumicore platformCPO/SiPh manufacturing
Company profileWebsite

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