Senior Mechanical Engineer

Commonwealth Fusion Systems; Milpitas (CA); On-site; USD 110,000 - 185,000; Full time

Job summary

Commonwealth Fusion Systems in Milpitas, CA is seeking a Senior Mechanical Engineer to join their R&D and equipment design team. This role involves designing advanced R&D equipment and complex machinery for the next generation of thin-film deposition technology.

The ideal candidate will bring strong technical expertise and collaboration skills, working in a fast-paced environment to ensure safe and high-performance equipment. The compensation range is competitive, between $110,000 and $185,000 per year.

Qualifications

• Strong technical expertise in mechanical engineering.
• Proven experience in designing complex machinery.
• Ability to work collaboratively across engineering functions.

Responsibilities

• Design and implement advanced R&D equipment for thin-film deposition.
• Collaborate across functions to ensure safe, reliable equipment.
• Mentor team members and solve complex engineering problems.

Skills

Advanced R&D equipment design

Mechanical engineering

Collaboration skills

Problem-solving

Mentoring

Education

Degree in Mechanical Engineering or related field

Job description

About Commonwealth Fusion Systems

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy. Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers and suppliers to build the energy industry of the future. We’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team. If that’s you and this role fits, we want to hear from you.

Join the power movement as a Senior Mechanical Engineer

We’re looking for a Senior Mechanical Engineer to join our R&D and equipment design team to help build the next generation of thin-film deposition technology. The Senior Mechanical Engineer will be responsible for the design and implementation of advanced R&D equipment and complex machinery. This role requires strong technical expertise, procedural discipline, and the ability to collaborate across engineering and technology functions to ensure safe, reliable, and high-performance equipment. If you enjoy working on complex design problems, mentoring others, and solving problems in a collaborative, fast-paced environment, this is your opportunity to make an impact.

Compensation / salary range: $110,000 - $185,000 USD per year. Location: Milpitas, CA.