Optical Test Engineer

About Lumilens

At Lumilens, we are building the essential photonics infrastructure that will drive tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is ushering in a new era of computing that is faster, cooler, and dramatically more efficient. We’re a well-funded startup backed by Mayfield and led by veterans who have built and scaled some of the industry’s most transformative technologies.

About the Role

As an Optical Product Test Engineer, you will play a vital role in validating and ensuring the quality of Lumilens’ photonic components, modules, and systems. This position combines hands-on production testing with test development and reporting, supporting both new product introduction (NPI) and volume manufacturing.

You will collaborate closely with the optical design, hardware, and manufacturing teams to calibrate, characterize, and troubleshoot next-generation photonics technologies that will drive tomorrow’s AI and HPC infrastructure.

Primary Duties & Responsibilities

• Perform characterization and testing of fiber optic components and modules
• Analyze test results to ensure compliance with performance specifications and quality standards
• Maintain accurate, detailed records of test procedures and outcomes
• Generate comprehensive test reports for internal and external stakeholders
• Support troubleshooting and root cause analysis to resolve product issues
• Design, plan, and conduct optical and fiber testing on components, devices, and systems
• Collaborate with cross-functional engineering teams to support NPI and manufacturing ramp

Education & Experience

• BS or MS in Engineering, Physics, Optics, or a related technical field
• 8+ years of industry experience in optical or fiber component testing preferred
• Prior exposure to photonics, telecom, or high-speed networking systems is a plus

Skills

• Hands-on experience with optical test instruments (e.g., optical spectrum analyzers, power meters, polarization controllers, bit-error-rate testers)
• Familiarity with communication interfaces and test automation tools
• Ability to write or adapt scripts for automation (Python, LabVIEW, Visual Basic; Shell scripting a plus)
• Strong analytical skills to interpret complex test data and identify patterns or anomalies
• Resourceful problem-solver with ability to apply knowledge creatively to test challenges
• Capable of managing multiple test projects and priorities in a fast-paced environment
• Strong communication and documentation skills; able to train and mentor peers when needed

Benefits

• Competitive salary and benefits
• Opportunities for career advancement
• Work with a world-class team solving cutting-edge challenges
• Collaborative and innovative work environment

Lumilens is committed to building a diverse and inclusive workplace. We are proud to be an equal opportunity employer.