Senior Mfg Engineer

SENIOR MANUFACTURING ENGINEER - THIRD SHIFT DEVENS, MA

Commonwealth Fusion Systems Corporate Operations - Operations

Full-time, On-site, Devens, MA

Shift: Monday through Friday, 10:00 pm - 6:30 am

Salary: $126,000-$212,000/year (includes 15% shift differential)

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 are designing and building commercially viable fusion power plants. Since 2018 we have raised significant capital and are the leading private fusion company in the world. Join the power movement as a Senior Manufacturing Engineer. We are seeking a hands‑on, detail‑oriented, innovative, and results‑driven Manufacturing Engineer to own third‑shift manufacturing activities.

You will be the magnet owner for the shift, accountable for process performance, quality, and production output. This role partners closely with design, production, quality, and supply chain to design, implement, and optimize manufacturing processes.

• Make real‑time decisions within established guardrails and elevate when conditions fall outside defined limits
• Analyze and improve manufacturing processes to reduce cost, increase efficiency, and ensure product quality
• Develop and maintain process documentation including work instructions, 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 design and procurement of tools, fixtures, and equipment for efficient production
• Troubleshoot equipment and process issues and implement corrective actions
• Conduct time and motion studies to optimize production methods and labor utilization
• Support continuous improvement initiatives and roll out 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

• Bachelor's degree in Manufacturing, Mechanical, Industrial Engineering, or related field
• 7+ years of experience in manufacturing or production engineering roles
• Strong knowledge of Lean Manufacturing, Six Sigma, and quality systems
• Proficient in CAD (NX, Solid Works, AutoCAD, or similar) and manufacturing ERP systems
• Ability to balance autonomy with disciplined escalation and lead through hands‑on engagement
• Excellent analytical, problem‑solving, communication, and teamwork skills
• Ability to work in a fast‑paced, team‑oriented environment

• Experience with statistical process control (SPC) and failure modes and effects analysis (FMEA)

• Ability to occasionally lift up to 50 lbs
• Ability to type, stand, stoop, and sit for extended periods
• Dedication to safety working around hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics
• Willingness to occasionally travel or work required nights, weekends, or be on‑call

• Salary range: $126,000-$212,000/year (includes 15% shift differential) + equity + benefits. Actual salary depends on level, location, qualifications, and experience.
• Competitive compensation with equity
• 13 company‑wide holidays, flexible vacation days, 10 sick days
• Generous parental leave, health/dental/vision insurance, 401(k) with employer matching
• Professional growth opportunities and team‑building activities

Commonwealth Fusion Systems is an equal opportunity employer.

Employment offers may be contingent on compliance with U.S