Senior Mechanical Engineer

Onto Innovation•Wilmington, MA

4d•Onsite

About The Position

Onto Innovation is seeking a Senior Mechanical Engineer to design, analyze, integrate, and support mechanical systems for advanced semiconductor inspection and metrology products. This individual-contributor role develops robust mechanical solutions supporting precision motion, optical stability, thermal performance, manufacturability, serviceability, and long-term field reliability. The position is primarily on-site in Wilmington, Massachusetts, with travel up to 25%. The engineer contributes throughout the product lifecycle, from concept development and prototyping through production release and customer deployment, and ensures designs meet performance, quality, safety, schedule, and cost objectives while supporting next-generation semiconductor technology development. The role involves cross-functional collaboration with engineering, operations, manufacturing, supply chain, field service, product support, product management, marketing, and customers. It also includes supplier and manufacturing-partner engagement, production readiness support, troubleshooting, corrective actions, and continuous mechanical design improvements. Onto Innovation offers competitive salaries and a benefits package that includes health, dental, and vision coverage; life and disability insurance; paid time off; a 401(k) with employer match; an Employee Stock Purchase Program; wellness initiatives; and access to cutting-edge tools. Annual bonus opportunities and potential long-term incentives are also offered. The stated base salary range is $115,200–$172,800, based on experience, location, and qualifications. Certain positions involving access to technical data may require U.S. export licensing review for applicants who are not U.S. citizens, permanent residents, or other protected persons under 8 U.S.C. 1324b(a)(3).

Requirements

Bachelor’s degree in Mechanical Engineering, Mechatronics, Robotics, Aerospace Engineering, Manufacturing Engineering, or a related technical discipline.
At least 8 years of mechanical engineering experience developing semiconductor equipment, capital equipment, precision instrumentation, automation systems, robotics, optical systems, motion platforms, or other complex electromechanical products.
Strong expertise in mechanical design, tolerance analysis, structural and thermal design considerations, CAD modeling, engineering documentation, prototype development, testing, and validation.
Experience supporting supplier engagement, design transfer, manufacturing release, root cause analysis, and corrective action implementation.
Ability to independently drive technical projects while collaborating across multidisciplinary engineering, operations, and customer-facing teams.
Strong analytical, problem-solving, communication, and technical leadership skills.

Nice To Haves

Master’s degree in Mechanical Engineering, Applied Science, or a related engineering discipline.
Experience with semiconductor inspection, metrology, lithography, advanced packaging, process control equipment, or other precision semiconductor manufacturing systems.
Knowledge of optical alignment systems, vibration-sensitive platforms, precision motion stages, thermal management solutions, and high-accuracy mechanical assemblies.
Proficiency with CAD and PDM/PLM systems, engineering change management processes, and configuration control.
Experience applying Design for Manufacturability (DFM), Design for Assembly (DFA), supplier qualification, reliability engineering, and continuous improvement methodologies.
Familiarity with cleanroom environments, new product introduction (NPI), and sustaining engineering activities.
Professional Engineer (PE) registration, Six Sigma certification, Lean Manufacturing training, Design for Reliability (DfR) experience, or equivalent advanced technical credentials.
Equivalent combinations of education and relevant industry experience may be considered for candidates demonstrating senior-level mechanical design expertise and technical leadership.

Responsibilities

Design, develop, and validate mechanical assemblies, structures, mechanisms, enclosures, precision fixtures, thermal management solutions, and system integration hardware for semiconductor inspection and metrology equipment.
Perform tolerance stack-ups, structural and thermal evaluations, design reviews, prototype testing, and verification activities.
Generate and release engineering documentation, drawings, specifications, and change orders in accordance with company processes.
Collaborate with suppliers and manufacturing partners on component development, production readiness, and quality improvements.
Provide manufacturing, installation, and field support by troubleshooting technical issues and implementing corrective actions.
Partner with cross-functional engineering, operations, manufacturing, supply chain, field service, product support, product management, marketing, and customer teams.
Drive mechanical design improvements focused on reliability, manufacturability, serviceability, cost optimization, and customer satisfaction.
Contribute across the product lifecycle, from concept development and prototyping through production release and customer deployment.
Ensure designs meet performance, quality, safety, schedule, and cost objectives while supporting next-generation semiconductor technology development.
Apply analytical problem-solving, engineering judgment, and cross-functional collaboration to resolve field issues and improve mechanical design quality and reliability.