Staff Mechanical Engineer - Wilmington-MA (Upton), United States
$115,200 - $172,800 USD yearly
Originally posted 2 September 2026 by the employer.
About the role
As a Staff Mechanical Engineer, you will lead the design and development of precision mechanical and optomechanical subsystems that achieve nanometer-level stability, accuracy, and repeatability for semiconductor metrology and inspection systems.
What you'll do
- Lead the design, analysis, and validation of advanced precision mechanical and optomechanical systems for semiconductor metrology and inspection equipment.
- Develop mechanical architectures that achieve demanding requirements in stability, stiffness, accuracy, repeatability, and thermal robustness.
- Perform mechanical analysis and simulation, including FEA, structural dynamics, thermal analysis, modal analysis, and tolerance studies.
- Drive prototyping, integration, testing, and experimental validation of precision mechanical subsystems.
- Collaborate cross-functionally with optical, electrical, software, systems, controls, and algorithm teams to deliver fully integrated solutions.
- Provide technical leadership, mentor junior engineers, and contribute to precision engineering and architecture roadmaps.
What you'll need
- MSc or PhD in Mechanical Engineering, Precision Engineering, Mechatronics, Aerospace Engineering, or a related field.
- 10+ years of experience in the design and development of high-precision mechanical systems.
- Proven experience with precision mechanics, flexure design, and optomechanical engineering.
- Strong understanding of mechanical system performance drivers, including stiffness, thermal stability, vibration, tolerances, material behavior, and structural dynamics.
- Hands-on experience with mechanical prototyping, integration, testing, and performance characterization.
- Experience with engineering analysis tools, including FEA and thermal simulation.
- Proficiency with 3D CAD tools such as NX, Creo, SolidWorks, or similar.
- Must be able to travel internationally to customer sites at least 20% of the time.
Skills: metrology, inspection systems, precision mechanical, optomechanical, FEA
This role has been open 44 days — below the 52-day median for Semiconductor Equipment Engineering roles.
Semiconductor Equipment Engineering · Metrology Inspection
|
Open roles in category
194
|
Median days open
52 d
|
Median salary
$159k
|
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Onto Innovation | All employers we track in this specialty (194 roles · 23 employers) |
|---|---|---|
| Open roles in this specialty | 21 | 194 |
| Open roles in the wider Process, Fab & Equipment family | 99 | 9874 · 109 employers |
| Median days open | 70 d | 52 d (+18 d vs this employer) |
| Median salary (USD postings) | — | $159k |
Skills observed across this category: metrology, inspection systems, precision mechanical, optomechanical, FEA
Who's hiring in this category
- KLA Corporation · 73 open roles · median 43 d
- Applied Materials · 25 open roles · median 67 d
- Onto Innovation (this employer) · 21 open roles · median 70 d
- Lam Research · 15 open roles · median 46 d
- Micron Technology · 12 open roles · median 42 d
- Entegris · 10 open roles · median 58 d
How we counted: 194 open Semiconductor Equipment Engineering (Metrology Inspection) roles from 23 employers tracked in the SemiconductorJobs index, counted 17 Oct 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there — it is counted in the wider Process, Fab & Equipment family row. Figures refresh nightly.
Onto Innovation
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