Test Maintenance Engineer

The role

The Test Maintenance Engineer will own the setup, qualification, and maintenance of test equipment for 800G and 1.6T optical transceiver production lines. This role focuses on driving tester uptime and ensuring measurement accuracy through GR&R and SPC.

What you will do

• Set up, install, and qualify optical transceiver test systems for 800G and 1.6T products.
• Perform preventive and corrective maintenance of test equipment.
• Plan and execute Gauge Repeatability & Reproducibility (GR&R) studies.
• Implement and monitor statistical process control (SPC) on tester performance and test data.
• Troubleshoot and repair tester hardware, fixtures, and instrumentation.
• Track and report tester uptime, MTBF/MTTR, and equipment health metrics.
• Manage tester spare parts, calibration schedules, and preventive maintenance plans.
• Collaborate with process and product engineering for NPI and capacity expansion.
• Ensure tester and test program changes are documented under change control.
• Partner with equipment suppliers on tester buy-off and upgrades.

Required qualifications

• Bachelor's degree in Electrical Engineering, Optical Engineering, or a related field
• Relevant experience in optical transceiver test and equipment maintenance
• Direct experience in optical testing
• Familiarity in optical transceiver test equipment (e.g., BERT/error detectors, optical power meters, TOSA/ROSA/module test stations, environmental chambers)
• Experience conducting GR&R studies and applying statistical process control (SPC) to test and measurement systems
• Strong troubleshooting skills for tester hardware, fixtures, optical/electrical instrumentation, and automation
• Track record of driving tester uptime, MTBF/MTTR improvement, and equipment reliability in a high-volume manufacturing environment
• Excellent problem-solving and analytical skills
• In-depth understanding of quality management systems and applicable quality standard requirements
• Data query and data analysis skills using statistical tools and techniques
• Ability to work well in a geographically diverse cross-functional team
• Good command of English communication, both verbal and written, including in-person and virtual presentation skills

Nice to have

• Hands-on experience with 800G and 1.6T (or comparable high-speed) optical transceiver test setups

About the company

Lumilens is building photonics infrastructure for AI supercomputing, including chip-to-chip optical interconnects and scalable photonic engines. The company is a well-funded startup backed by Mayfield.