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IC Package FEA Engineer

Lumilens · San Jose · On-site

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About Lumilens

Backed by Redpoint.

About the role

At Lumilens, we are redefining the optical layer that powers tomorrow’s AI and high‑performance computing. We are seeking an experienced IC Package Mechanical FEA Engineer to help drive the next generation of high‑performance packaging solutions for advanced ASICs.

What they're looking for

  • Bachelor’s in Mechanical Engineering (or related field) with 12+ years FEA experience, Master’s with 10+, or PhD with 7+
  • Deep expertise in advanced packaging technologies, including flip‑chip, FOWLP, 2.5D/3D integration, chiplet architectures, and TSVs
  • Strong understanding of materials behavior across polymers, metals, ceramics, and their thermo‑mechanical interactions
  • Familiarity with semiconductor packaging processes such as die attach, underfill, molding, bumping, and reflow
  • Proficiency with FEA tools, including Ansys Classic/Mechanical and Abaqus
  • Ability to interpret and correlate complex simulation results using first‑principles mechanical engineering concepts
More about this role

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.

At Lumilens, we are redefining the optical layer that powers tomorrow’s AI and high‑performance computing. We are seeking an...

Read the full posting on Lumilens's site ↗

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