About this opportunity
Quiet Capital lists this Principal Mechanical Engineer opportunity in milpitas, California. Review the employer’s description below for duties, qualifications and application requirements.
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. We’re working with policymakers and suppliers to build the energy industry of the future.
We’ve raised nearly $3 billion in capital since 2018, making us the largest and leading private fusion company in the world. We’re looking for more thinkers, doers, builders, and makers to join us. If that’s you and this role fits, we want to hear from you.
Join the power movement as a Principal Mechanical Engineer
We’re looking for a Principal Mechanical Engineer to join our R&D and equipment design team to help build the next generation of thin-film deposition technology. The Principal 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.
What you\'ll do:
Lead the design and implementation of advanced R&D equipment for thin film processing, including ownership of key mechanical modules and sub-systems
Define system level requirements and drive innovative design concepts to meet these requirements
Lead design reviews for overall mechanical system and key mechanical subsystems
Generate and maintain interfaces with other engineering subsystems
Report on and be accountable for project progress to stakeholders
Work effectively within a multi-disciplinary team of top scientists and engineers
Mentor engineering staff for effectiveness and delivery of on-time and in-spec outcomes
Get things done: drive projects, consistently deliver, act with speed
What we’re looking for:
Master’s degree in Mechanical Engineering or related field (or equivalent industrial experience)
15+ years of experience with at least 7 years of experience working as a principal mechanical design engineer or engineering team lead in a relevant context: design and implementation of R&D systems and manufacturing equipment
Ability to conceive of novel solutions for complex engineering systems in challenging environments
Expertise with 3D modeling; preferred experience with SolidWorks and NX
Experience with COMSOL, ANSYS or other FEA tools
Ability to select and qualify vendors for components or subsystems
Demonstrated ability to lead in either direct or matrix structures
Strong verbal and written communication skills and a dedication to high-quality documentation
Bonus points for:
Ph.D. in Mechanical Engineering or related field (or equivalent industrial experience)
Prior success building first-of-kind or experimental tools for material science or semiconductor R&D
Familiarity in applying Semi-S8, ASME, ACI, ASTM, and other mechanical standards to design solutions
Experience with the operation of equipment in a manufacturing environment
Must-have Requirements:
Ability to occasionally lift up to 50 lbs
Perform activities such as stooping, climbing, standing, or sitting for extended periods of time
Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
Willingness to travel or work required nights/weekends/on-call occasionally
$150,000 - $225,000 a year
Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:
Competitive compensation with equity
12.5 Company-wide Holidays
Flexible vacation days
10 sick days
Generous parental leave policy
Health, dental, and vision insurance
401(k) with employer matching
Professional growth opportunities
Team-building activities
#LI-Onsite
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
#J-18808-Ljbffr
Worksite address
milpitas, CA, 95035, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.