Staff Mechanical Engineer, Precision Metrology

Onto Innovation; Wilmington, Northern (MA, KY); Hybrid; USD 115,000 - 173,000; Full time

Benefits offered by this job

Competitive salary

Comprehensive benefits package

Employee Stock Purchase Program (ESPP)

Job summary

Onto Innovation seeks a Staff Mechanical Engineer to lead design and development of precision mechanical and optomechanical subsystems for semiconductor metrology and inspection equipment. You will drive stability, accuracy, and repeatability through advanced flexure mechanisms and integrated architectures.

You will collaborate with optical, electrical, software, and systems teams, perform analyses (FEA/thermal), mentor engineers, and contribute to roadmaps for AI-driven yield optimization and

Qualifications

• Advanced degree in mechanical/precision engineering or related field.
• 10+ years of experience in design and development of high-precision mechanical systems.
• Proven experience with precision mechanics, flexure design, and optomechanical engineering.
• Strong understanding of stiffness, thermal stability, vibration, tolerances, material behavior, and dynamics.
• Hands-on prototyping, integration, testing, and performance characterization.
• Experience with engineering analysis tools (FEA, thermal simulation).
• Proficiency with 3D CAD tools (NX, Creo, SolidWorks).
• Experience in cross-disciplinary teams and project ownership.

Responsibilities

• Lead design, analysis, and validation of precision mechanical and optomechanical systems for metrology and inspection equipment.
• Develop mechanical architectures for stability, stiffness, accuracy, repeatability and thermal robustness.
• Design and optimize flexure-based mechanisms, mounts, assemblies, and interfaces.
• Perform mechanical analysis and simulation including FEA, dynamics, thermal analyses, and tolerance studies.
• Collaborate with suppliers to develop and qualify components and manufacturing processes.
• Drive prototyping, integration, testing, and validation of subsystems.
• Support root-cause investigations and drive performance improvements.
• Mentor junior engineers and contribute to roadmaps across mechanical, optical, and mechatronics domains.

Skills

Leadership

Mentorship

Cross-functional collaboration

Problem solving

Education

MSc/PhD in Mechanical Engineering or related field

Tools

NX

Creo

SolidWorks

FEA

Thermal simulation

Job description

Onto Innovation seeks a Staff Mechanical Engineer to lead design and development of precision mechanical and optomechanical subsystems for semiconductor metrology and inspection equipment. You will drive stability, accuracy, and repeatability through advanced flexure mechanisms and integrated architectures.

You will collaborate with optical, electrical, software, and systems teams, perform analyses (FEA/thermal), mentor engineers, and contribute to roadmaps for AI-driven yield optimization and