Senior Manufacturing Engineer

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 Manufacturing Engineer

We are seeking a detail‑oriented, innovative, and results‑driven Manufacturing Engineer to join our team. The successful candidate will be responsible for designing, implementing, and optimizing manufacturing processes to improve productivity, efficiency, and quality across the production line. This role involves close collaboration with design engineers, production staff, quality assurance, and supply chain teams.

What you’ll do

• Analyze and improve manufacturing processes to reduce costs, increase efficiency, and ensure product quality
• Develop and maintain process documentation including work instructions, standard operating procedures (SOPs), and process flow diagrams
• Collaborate with product design and development teams to ensure manufacturability of new products
• Implement Lean Manufacturing and Six Sigma methodologies to enhance production performance
• Lead the design and procurement of tools, fixtures, and equipment required for efficient production
• Troubleshoot equipment and process issues and implement corrective actions
• Conduct time and motion studies to determine optimal production methods and labor utilization
• Support continuous improvement initiatives and implement best practices across the facility
• Ensure compliance with safety regulations, company policies, and industry standards
• Evaluate new technologies and automation solutions to enhance manufacturing capabilities

What we’re looking for

• Bachelor’s degree in Manufacturing Engineering, Mechanical Engineering, Industrial Engineering, or related field
• 7+ years of experience in a manufacturing or production engineering role
• Strong knowledge of Lean Manufacturing, Six Sigma, and quality systems.
• Proficient in CAD software (SolidWorks, AutoCAD, etc.) and manufacturing ERP systems.
• Excellent analytical and problem‑solving skills.
• Strong communication and teamwork abilities.
• Ability to work in a fast‑paced, team‑oriented environment

Bonus points for

• Knowledge of statistical process control (SPC) and failure modes and effects analysis (FMEA)

Must‑have requirements

• Ability to lift up to 50 lbs occasionally
• Perform activities such as typing, standing, stooping, and sitting, for extended periods of time
• Dedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics
• Willingness to occasionally travel or work required nights/weekends/on‑call

$110,000 - $185,000 a year

Benefits include

• 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

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