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

Commonwealth Fusion Systems; Harvard (MA); On-site; USD 121,000 - 203,000; Full time

Benefits offered by this job

Equity

Parental leave

Health, dental, and vision insurance

401(k) with employer matching

Professional growth opportunities

Job summary

Commonwealth Fusion Systems is seeking a Manufacturing Engineer to design, implement, and optimize manufacturing processes across the production line. You will be the magnet owner, accountable for shift performance, and collaborate with design, quality, supply chain, and production staff to drive efficiency and quality.

The role involves leading Lean/Six Sigma initiatives, developing tooling and fixtures, and guiding continuous improvement.

Qualifications

• 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.

Responsibilities

• Make real-time decisions within established guardrails; escape when conditions fall outside defined limits.
• Analyze and improve manufacturing processes to reduce costs, increase efficiency, and quality.
• Develop and maintain process documentation including 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 for efficient production.
• Troubleshoot equipment and process issues and implement corrective actions.
• Conduct time and motion studies to determine optimal production methods and labor efficiency.
• 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.

Skills

Lean Manufacturing

Six Sigma

CAD software

NX

SolidWorks

AutoCAD

ERP systems

Leadership

Analytical thinking

Teamwork

Education

Bachelor’s degree in Manufacturing Engineering

Bachelor’s degree in Mechanical Engineering

Bachelor’s degree in Industrial Engineering

Tools

NX

SolidWorks

AutoCAD

ERP systems

Job description

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, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading 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 am - 6:00 pm

Salary Range

$121,000 - 203,000 (includes 10% shift differential)

What you'll do:

• Make real-time decisions within established guardrails; escape when conditions fall outside
• defined limits
• Analyze and improve manufacturing processes to reduce costs, increase efficiency, and
• 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
• 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
• 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

Salary Range: $121,000 - 203,000 (includes 10% shift differential)

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
• Generous parental leave policy
• Health, dental, and vision insurance
• 401(k) with employer matching
• Professional growth opportunities

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