Manufacturing & Test Engineer
Posted 17 Aug 2026
Advertised as “Manufacturing & Test Engineer (SMT / Test / Automation / FA / IE)”
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 2+ yrs
- Management level
- Individual contributor
- Employment
- On-Site
- Contract
- Full-time
No salary listed for this role.
CertificationsBachelor’s Degree
Field of studyElectrical Engineering, Electronics Engineering, Industrial Engineering, Manufacturing Engineering, Mechanical Engineering, Mechatronics
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
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
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Test & Test Maintenance (TE): Develop, sustain, and troubleshoot functional test fixtures, automated test equipment (ATE), and test scripts.
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SMT & Process (SMT Machine / SMT Process): Optimize solder paste printing, high-speed pick-and-place, reflow profiling, and AOI/SPI parameters.
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Automation & Industrial Engineering (AE / IE): Implement robotic cells, optimize line balancing, cycle times, ergonomic layout, and factory throughput.
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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).