Commonwealth Fusion Systems
Staff Mechanical Engineer - Vacuum
$166K–$240K
Milpitas, CA · On-site · Staff · Full-time · Posted Aug 20, 2026
- Experience
- 15+ years.
- Education
- Master’s degree in Mechanical Engineering or a related field (or equivalent industrial experience).
About the job
Leads the design, integration, validation, and implementation of advanced thermal-vacuum R&D equipment and machinery.
What you'll do
- Lead system design, integration, validation, and design reviews, emphasizing requirements, manufacturability, and mechanical best practices.
- Coordinate with cross-functional teams and stakeholders to deliver projects on time and to specification.
- Establish engineering workflows and mentor staff in technical delivery and professional development.
What they ask for
- Master’s degree in Mechanical Engineering or a related field (or equivalent industrial experience).
- 15+ years of experience designing and implementing complex R&D systems or semiconductor manufacturing equipment.
- Expertise in high-temperature structural design, thermal management in vacuum environments, and vacuum architecture.
- Expertise in 3D modeling and FEA/thermal simulation; hands-on machining, prototyping, and hardware troubleshooting capability.
Nice to have
- Experience designing or integrating roll-to-roll systems or first-of-kind semiconductor R&D/thin-film deposition tools.
- Familiarity with SEMI, ASME, ASTM, or other mechanical codes; experience with precision motion and motor-controlled systems.
Pay
USD 166,000–240,000 per-year-salary (base salary)
Tools
SolidWorks, NX, COMSOL, ANSYS, SEMI, ASME, ASTM
Model-written summary · the original posting is authoritative