Senior Manufacturing Engineer - Weekend Second Shift (Fri, Sat, Sun)

Commonwealth Fusion; Harvard (MA); On-site; USD 126,000 - 212,000; Full time

Benefits offered by this job

Competitive compensation with equity

13 company-wide holidays

Flexible vacation days

10 sick days

Parental leave policy

Health, dental, and vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems is seeking a hands-on Manufacturing Engineer to design, implement, and optimize production processes. You will own the shift, collaborate with design, production, QA, and supply chain teams, and lead Lean and Six Sigma initiatives to boost productivity and quality across the line.

Requirements include a Bachelor’s degree in Manufacturing/Mechanical/Industrial Engineering and 7+ years in manufacturing engineering, CAD proficiency (NX, SolidWorks, AutoCAD), and

Qualifications

• Bachelor’s degree in Manufacturing Engineering or related field.
• 7+ years in manufacturing/production engineering.
• Strong knowledge of Lean Manufacturing and Six Sigma.
• Proficient in CAD software (NX, SolidWorks, AutoCAD) and ERP systems.
• Excellent communication and teamwork abilities.
• Ability to work in a fast-paced, team-oriented environment.

Responsibilities

• Make real-time decisions within guardrails; escalate when outside limits.
• Analyze and improve manufacturing processes to cut costs and boost efficiency.
• Develop and maintain process documentation (work instructions, SOPs, flow diagrams).
• Collaborate with design and development teams for manufacturability of new products.
• Lead Lean and Six Sigma initiatives to improve production performance.
• Lead design and procurement of tools, fixtures, and equipment.
• Troubleshoot equipment and process issues and implement corrective actions.
• Conduct time and motion studies to optimize methods and labor use.
• Support continuous improvement and share best practices across the facility.
• Ensure safety compliance and adherence to standards.
• Evaluate new technologies and automation to enhance capabilities.

Skills

Lean Manufacturing

Six Sigma

Leadership

Problem solving

Communication

Education

Bachelor’s degree in Manufacturing/Mechanical/Industrial Engineering

Tools

NX

SolidWorks

AutoCAD

ERP systems

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 Manufacturing Engineer

We are seeking a hands‑on, 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. You will be the magnet owner, holding overall accountability for this shift. This role involves close collaboration with design engineers, production staff, quality assurance, and supply chain teams.

The Schedule

Shift: Friday through Sunday, 6:00 pm - 6:00 am

Salary Range

$126,000 - 212,000 (includes 15% shift differential)

What you’ll do

• Make real‑time decisions within established guardrails; escalating when conditions fall outside defined limits.
• Analyze and improve manufacturing processes to reduce costs, 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 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 (NX, SolidWorks, AutoCAD, etc.) and manufacturing ERP systems.
• Ability to balance autonomy with disciplined escalation.
• Leadership through hands‑on engagement.
• 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 or on‑call.

Benefits

Salary range for this full‑time position + equity + 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.

About Our Culture

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.

Equal Opportunity Employer

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.

Export Control Compliance

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (“Export Control Laws”). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.