Staff Optical Manufacturing Test Engineer - Hardware Automation

Singapore · 12+ years experience · Full-time · Posted Oct 2, 2026

At a glance

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. At Lumilens, we’re developing high-speed photonics products purpose-built to power the future of AI infrastructure and high-performance computing.
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 scaling optical systems. 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.

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

Ensure all changes to test hardware and processes are under change control and follow established QMS requirements.
Responsible for tester documentation, specifications, and analyzing test results to ensure compliance with performance specifications and quality standards.
Develop, assemble, validate, buy off and release the testers for production.
Responsible for product test yield, with quality, reliability, cycle time, throughput, and scrap reduction.
Collaborate with quality teams for the planning and execution of qualification tests and with design teams to ensure DFM and DFT guidelines are met.
Design, plan, and conduct optical and fiber testing on components, devices, and systems, and perform production calibration.
Maintain accurate records, generate comprehensive test reports, and support troubleshooting and root cause analysis.
Work closely with contract manufacturing partners to train operators, provide test process guidelines, and review/approve test change orders.
Responsible for process control of all testers, including SPC, GR&R and other correlation studies.
Collaborate with software engineers, IT and database architects to define better solutions to manage and analyze manufacturing test data.

Bachelor’s degree in Electrical Engineering, Industrial Engineering, Physics, or related field.
Expert in optical test equipment and protocols pertaining to manufacturing and design of optical transceivers.
Hands-on experience with optical test instruments such as optical spectrum analyzers, power meters, polarization controllers, and bit-error-rate testers.
In-depth technical knowledge and hands-on experience in yield analysis, problem solving, and implementation of manufacturing processes.
Practical experience in SPC, GR&R, tester correlation, and report generation.
Ability to write or adapt scripts for automation using Python, LabVIEW, or Visual Basic.
Experience in ongoing reliability testing and quality control best practices.
In depth understanding of the quality management system and quality standard requirements.
Expertise in optics FA processes and tools.
Good command in English communication both verbal and written, and international travel required.