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

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

Benefits offered by this job

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

Job summary

Commonwealth Fusion Systems is seeking a hands-on Manufacturing Engineer to design, implement, and optimize manufacturing processes across the production line. The role focuses on improving productivity, efficiency, and product quality through Lean and Six Sigma methodologies.

The successful candidate will lead tooling and equipment design, collaborate with design teams, and drive continuous improvement while ensuring safety and compliance in a fast-paced environment.

Qualifications

• Bachelor's degree in a relevant engineering field.
• 7+ years of experience in manufacturing/production engineering.
• Strong knowledge of Lean, Six Sigma, and quality systems.

Responsibilities

• Make real-time decisions within guardrails and escalate when outside limits.
• Analyze and improve manufacturing processes to reduce costs and boost efficiency.
• Develop and maintain SOPs, work instructions, and process flow diagrams.
• Collaborate with design and development teams for manufacturability of new products.
• Lead Lean and Six Sigma initiatives to improve production performance.
• Lead tooling, fixtures, and equipment design for efficient production.
• Troubleshoot equipment and process issues and implement corrective actions.
• Conduct time and motion studies to optimize methods and labor use.
• Support continuous improvement initiatives and best practices across the facility.
• Ensure safety regulations and company policies are followed.
• Evaluate new technologies and automation solutions to enhance capabilities.

Skills

Lean Manufacturing

Six Sigma

Quality systems

Analytical skills

Problem solving

Strong communication

Teamwork

Fast-paced environment

Education

Bachelor's degree in Manufacturing Engineering

Bachelor's degree in Mechanical Engineering

Bachelor's degree in Industrial Engineering

Tools

NX CAD

SolidWorks

AutoCAD

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.

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; 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, 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 (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/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.

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"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.