Manufacturing and Test Engineer
Lumilens
Manufacturing and Test Engineer
Lumilens
Photonic interconnects for AI infrastructure
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.
We are seeking versatile Engineers to drive the ramp-up and optimization of our high-volume production lines at the Bulim facility. You will design, optimize, and sustain critical manufacturing processes, test systems, and automation infrastructure across key factory domains.
Specialization Tracks
Test & Test Maintenance (TE): Develop, sustain, and troubleshoot functional test fixtures, automated test equipment (ATE), and test scripts.
SMT & Process (SMT Machine / SMT Process): Optimize solder paste printing, high-speed pick-and-place, reflow profiling, and AOI/SPI parameters.
Automation & Industrial Engineering (AE / IE): Implement robotic cells, optimize line balancing, cycle times, ergonomic layout, and factory throughput.
Debug, Failure Analysis & Rework (Debug / FA / RE): Drive component-level PCBA failure analysis, root-cause 8D investigations, and micro-rework standards.
Key Responsibilities
· Establish standard operating procedures (SOPs), process windows, and equipment maintenance recipes for new product introductions (NPI) to mass production.
· Monitor line yields, track Cpk metrics, and deploy SPC methodologies to eliminate recurring production defects.
· Partner with NPI, Design, and Quality teams to execute Engineering Change Notices (ECNs) and qualify new tooling or component substitutes.
· Lead cross-functional problem-solving initiatives using structured methodologies (8D, 5-Why, Fishbone, DOE).
Qualifications & Requirements
· Bachelor’s Degree in Mechanical, Electrical/Electronics, Mechatronics, Industrial, or Manufacturing Engineering.
· 2+ years of hands-on engineering experience in high-volume electronics assembly, SMT, PCBA testing, or semiconductor packaging.
· Practical exposure to at least one primary domain: SMT equipment, ATE/LabVIEW/Python test scripts, PLC programming, or PCBA failure analysis.
· Strong analytical mindset with experience in SPC, FMEA, and data analysis tools (Minitab, JMP).
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.
Lumilens designs and manufactures optical interconnect products to accelerate AI infrastructure. It provides high-density photonic interconnects—such as high-density pluggable, near-packaged, and co-packaged optics—built with in-house silicon photonics to scale GPU clusters in AI data centers. Its products include 800G and 1.6T optical transceivers for AI networking, and it is pursuing broader integration like Electrical-Optical Interposers through a strategic partnership with POET Technologies. The company differentiates itself through vertical integration, custom robotics-driven manufacturing, and AI-optimized production processes that aim to improve yield and supply chain stability. Lumilens targets hyperscalers and large AI providers, seeking to move interconnect bottlenecks from compute to scalable, efficient data-center networks. Its goal is to enable faster, denser GPU connectivity to support growing AI workloads and models.
Explore more opportunities at Lumilens