Senior Photonics Process Development Engineer
Monarch Quantum · San Diego, California, United States · Posted Jun 15, 2026
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Join our fast-paced and passionate team as a Senior Photonics Process Development Engineer. As we scale, you will play a key role in developing and maturing the processes that enable our products to move from concept to production. This is a highly hands-on role for someone who thrives in a dynamic startup environment and enjoys solving complex manufacturing challenges.
You’ll work closely with device, optical, mechanical, and manufacturing engineers to turn fragile photonic designs into robust, repeatable products. You’ll contribute to establishing best practices, improving yield, and supporting the transition from R&D to production.
Key Responsibilities
Lead hands-on process development for:
Wire bonding (Au, Al; ball and wedge)
Die bonding (epoxy, eutectic, and solder attach)
Vacuum reflow soldering (AuSn, SAC, indium, etc.)
Fiber splicing (fusion splicing, PM fiber alignment)
Optics attach and active alignment (lenses, isolators, fiber arrays)
Design and execute DOE experiments to improve yield, reliability, and performance
Support the transition of processes from R&D to pilot and early-stage manufacturing
Develop and maintain process flows, work instructions, and travelers
Perform root-cause analysis for yield loss and reliability issues
Collaborate with equipment vendors on tooling, fixturing, and process optimization
Support product qualification, reliability testing, and failure analysis efforts
Train technicians and manufacturing personnel on established processes
Contribute to continuous improvement of process control and manufacturability