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
This is a critical technical role responsible for the operational execution, process control, and continuous improvement of Lumilens’ wafer-level testing operations. You will serve as a key owner of wafer-level test processes, test flow, manufacturing readiness, production performance, yield, and process optimization, working closely with internal engineering teams and external manufacturing partners to ensure robust, scalable, and efficient wafer-level testing. The role requires a highly analytical and hands-on engineer who can translate product and test requirements into reliable production processes and drive continuous improvement.
Key Responsibilities
- Wafer-Level Test Process Ownership: Own and continuously improve wafer-level test processes to ensure stable, repeatable, and efficient production execution. Lead the setup, qualification, and day-to-day operation of automated wafer probers, optical alignment systems, and Automated Test Equipment (ATE) for electrical and photonic wafer-level testing.
- Production Operations: Drive day-to-day wafer-level test operations, monitor production performance, identify process constraints, and ensure execution against production plans and quality requirements.
- Test Process Development & Qualification: Develop, optimize, and qualify wafer-level test processes, including test flows, test conditions, process parameters, and operating procedures for new and existing products.
- Process Control: Establish and maintain process specifications, control plans, operating windows, and monitoring methodologies to ensure consistent test performance and minimize process variation.
- Yield Improvement & Failure Debug: Monitor wafer-level test yield and defect performance, identify systematic and process-related losses, and lead improvement activities to increase yield and manufacturing efficiency. Drive effective corrective and preventive actions to prevent recurrence.
- Test Data Analysis: Analyze wafer-level test data to identify trends, abnormal conditions, process shifts, and systematic failures. Establish appropriate metrics and monitoring mechanisms to track production performance.
- Process Documentation: Develop and maintain test process specifications, work instructions, control plans, qualification reports, and other manufacturing documentation required for production execution.
- Cycle Time & Productivity Improvement: Drive improvements in test cycle time, throughput, yield, process efficiency, and overall manufacturing cost without compromising product quality or reliability.
- Continuous Improvement: Lead structured improvement activities using data-driven methodologies such as DOE, SPC, Six Sigma, and root-cause analysis to improve process capability and manufacturing performance.
- Cross-Functional Collaboration: Work closely with product engineering, quality, supply chain, industrial engineering, and program management teams to ensure successful product qualification, production ramp, and ongoing manufacturing execution.
Requirements & Qualifications
- Bachelor’s degree in Electrical Engineering, Electronics Engineering, Microelectronics, Physics, Optical Engineering, Semiconductor Engineering, or a closely related discipline.
- Minimum 5 years of experience in semiconductor wafer-level testing, wafer sort, test process engineering, manufacturing operations, parametric test process engineering within semiconductor fab, OSAT, high-tech manufacturing environment or silicon photonics environments.
- Strong analytical and…