Principal Mechanical Engineer
Commonwealth Fusion SystemsMilpitas, California
Full Time
Posted October 17, 2025
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Job Description
A Principal Mechanical Engineer responsible for designing and implementing advanced research and development equipment and complex machinery for fusion energy technology, collaborating across engineering teams to ensure safety, reliability, and high performance.
Key Responsibilities
- Design and implement advanced R&D equipment and complex machinery
- Collaborate across engineering and technology functions to ensure equipment safety, reliability, and high performance
- Mentor team members and solve complex design problems
Requirements
- The candidate must have strong technical expertise in mechanical engineering related to the design and implementation of advanced R D equipment and complex machinery.
- The candidate must have procedural discipline in engineering practices.
- The candidate must have the ability to collaborate across engineering and technology functions to ensure safe, reliable, and high-performance equipment.
- The candidate must enjoy working on complex design problems.
- The candidate must have experience mentoring others in a technical environment.
- The candidate must be able to solve problems in a collaborative, fast-paced environment.
- The candidate must be willing to work onsite at Commonwealth Fusion Systems facilities.
Benefits & Perks
Compensation/salary range (not specified in the posting)
Work schedule: Onsite, fast-paced environment
Work environment perks: Collaborative, diverse, mission-driven culture
Additional benefits: Mentoring opportunities, impactful work in fusion energy, compliance with export control laws
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