Staff Mechanical Engineer - Precision Motion & Controls

Onto Innovation Inc.; Milpitas (CA); On-site; USD 144,000 - 216,000; Full time

Job summary

Onto Innovation is seeking a Staff Mechanical Engineer in Milpitas to lead precision motion control design for semiconductor capital equipment. You will apply dynamics-informed design, develop servo loops, stage control architectures, and integrate high-resolution feedback systems.

You will collaborate across controls, electrical, and software teams to translate system requirements into robust mechanical and control solutions, while supporting manufacturing and field improvements and traveling

Qualifications

• 7+ years of experience in precision mechanical/mechatronic systems.
• Strong fundamentals in control systems, dynamics and vibration analysis.
• Experience with servo tuning tools and motion controllers.
• Familiarity with semiconductor equipment or similar high-precision motion systems.
• Willing to travel internationally up to 20%.
• Knowledge of SEMI, CE, UL compliance.

Responsibilities

• Apply the Onto Innovation product development process from concept through manufacturing release, with strong emphasis on control system architecture, integration, and validation for precision semiconductor capital equipment.
• Lead mechanical and mechatronic design with a focus on dynamics-informed design to enable high-performance motion control.
• Develop and support motion control systems including: Servo loop design, tuning, and optimization; Stage control architectures; Integration of encoders and high-resolution feedback systems.
• Perform dynamic system analysis including: Modal analysis and frequency response; Vibration characterization and mitigation; Identification and mitigation of structural resonances.
• Collaborate cross-functionally with controls, electrical, and software teams to define architectures and interfaces and translate system requirements into control specifications.
• Provide technical support to manufacturing, service, and customers for motion performance issues and field improvements.

Skills

Control systems

Structural dynamics

System identification

Servo tuning

Multi-axis motion

FEA tools

Encoders feedback

Education

BS/MS/PhD in Mechanical Engineering

Tools

FEA software

Motion controllers

Sensors/encoders

Job description

Onto Innovation is seeking a Staff Mechanical Engineer in Milpitas to lead precision motion control design for semiconductor capital equipment. You will apply dynamics-informed design, develop servo loops, stage control architectures, and integrate high-resolution feedback systems.

You will collaborate across controls, electrical, and software teams to translate system requirements into robust mechanical and control solutions, while supporting manufacturing and field improvements and traveling