Mechanical Engineer – Cable Magnets

About the Company

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, suppliers, and many others to build the energy industry of the future. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.

About the Role

As a Mechanical Engineer for the Cable Magnets Engineering team, you will own hardware from early concepts to delivery. You will develop the design, performing thermal, structural, and electromagnetic analysis to ensure the hardware meets requirements. You will develop design notes, technical specifications, and other documentation necessary to manufacture and install the Cable Magnet hardware and supporting systems. You will support procurement in the preparation and execution of manufacturing contracts, and support CFS production and assembly teams through build and installation of your designs.

Responsibilities

• Act autonomously as the primary owner of cable magnet hardware for SPARC, ARC, or other projects, ensuring designs are completed, validated, procured, built, and installed correctly and on time
• Produce new and iterate on existing design concepts, using a deep understanding of physics, structural mechanics, and analysis techniques for both metallics and composites
• Liaise with partner teams such as R&D, analysis, manufacturing, and procurement to drive completion of program milestones in a timely fashion
• Diagnose issues on the production and assembly line and provide immediate path forward based on known understanding of hardware. Propose and implement design solutions based on root cause
• Prepare reports, presentations, and other documentation to serve as design documentation and validation of final Cable Magnet systems

Requirements

• Bachelor’s degree in mechanical engineering, aerospace engineering, or another relevant field
• A minimum of 5 years of engineering design and analysis experience is required, including at least 2 years providing engineering support to production hardware in the form of resolving technical issues and implementing design for manufacturing or assembly changes
• Relevant hands-on experience in the form of parts designed for high loads and/or extreme environments
• Excellent fundamental knowledge of mechanical systems such as static structures and heat transfer
• Familiarity with all steps in the design process with an emphasis on creativity, simplicity, and execution
• Be self-motivated, committed to self-growth, and exhibit excellent problem-solving skills
• CAD proficiency (required) – NX preferred, any acceptable
• FEA (required) – ANSYS and COMSOL preferred

Preferred Qualifications

• Demonstrated record of design of mechanical components beyond desktop scale (e.g., high power (MW+), high mass (ton+), high force (MN+))
• Expertise in ASME Y14 GD&T principles
• Experience in production or heavy equipment assembly environments
• Design experience with electromagnets, vacuum systems, welding, composite materials, radiation environments, or cryogenic environments

Work Environment

• Perform activities such as sitting for extended periods of time
• Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
• Occasional travel, occasional nights/weekends/on-call

Benefits

• Competitive compensation with equity
• 13 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

Pay

Salary range for this full-time position includes equity and benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed reflects new hire salaries for the position across all US locations.