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Senior Optical Engineer

Onto Innovation | Milpitas, United States | Posted June 07, 2026

Position Overview

Onto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: 3D metrology spanning the chip from nanometer-scale transistors to micron-level die-interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging. Our breadth of offerings across the entire semiconductor value chain helps our customers solve their most difficult yield, device performance, quality, and reliability issues. Onto Innovation strives to optimize customers’ critical path of progress by making them smarter, faster and more efficient.

Job Summary & Responsibilities

  • System Design & Modeling: Utilize Zemax to design illumination and imaging paths, perform tolerancing, and analyze stray light.
  • Performance Optimization: Create error budgets, conduct image simulations, and optimize laser beam propagation or opt...
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