Lead Systems Applications Engineer

Lumilens • San Jose, CA

115d

About The Position

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 some of the hardest challenges in optics, systems, and scale. Every line of code, every design decision, every breakthrough you help deliver—will shape the infrastructure of tomorrow. If you're looking for mission, momentum, and the chance to make an outsized impact—jump on the rocket ship. We’re just getting started.

Requirements

• Bachelor or advanced degree in Electrical Engineering, or a related field.
• Deep understanding of optical transceivers on switches.
• Extensive hands-on experience with DSP, optical transceiver configuration and debugging.
• Strong familiarity with AI networking switch architecture and configurations.
• Experience working with 800G transceivers and 51.2T switches is a plus.
• Preferably has working experience with leading optical transceiver companies.
• Excellent problem-solving and communication skills.
• Ability to work independently and as part of a team.
• Strong customer-facing and interpersonal skills.

Responsibilities

• Provide expert support for 51.2T and beyond switch configurations, with a focus on 800G and 1.6T optical transceivers.
• Serve as the technical support manager, supporting customers to understand their technical requirements and provide tailored solutions.
• Troubleshoot and resolve issues related to AI networking switches and optical transceivers.
• Conduct customer demos and provide hands-on support for switch configurations.
• Collaborate with multifunctional teams including optical, software, hardware, mechanical, and thermal.
• Stay updated on industry trends and advancements in AI networking and optical transceivers.

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.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Bachelor's degree