Senior Manufacturing Engineer - Assembly

Commonwealth Fusion Systems

1050

Devens, MA

Posted on: 2026-09-30

Category: renewables

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Employment type:

Full time

Experience required:

Senior

Salary

$110,000.00 - $185,000.00

About the company:

Commonwealth Fusion Systems (CFS) is on a mission to deliver clean fusion energy to the planet fast enough to matter for humanity’s biggest challenges.

It’s urgent. The gap between the energy we need and the energy we have is widening every day. Fusion is a critical part of the energy transition away from fossil fuels, a new chapter for the world’s energy supply.

We’re committing to delivering fusion power plants and a full-fledged fusion energy industry as we’ve delivered on other promises. Like the world’s strongest high-temperature superconducting magnet, the game-changing technology that’s making commercial fusion energy a reality.

We’ve raised over $2 billion in capital — more than any other fusion energy company — and attracted top talent to design, build, and deliver commercial fusion power plants. And we’re working with policymakers and suppliers to make fusion energy available globally.

As we push toward the fusion-energy future, we’ll keep setting and meeting milestones, sharing and validating our progress, and encouraging others to do the same.

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, 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 Senior Manufacturing Engineer - Assembly

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.

#LI-Onsite

#CFS-NE

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

What you'll do:

Develop and implement new manufacturing lines within a high-mix, low volume environment

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:

Experience with clean lines
Knowledge of statistical process control (SPC) and failure modes and effects analysis (FMEA)

Must-have requirements:

Ability to occasionally lift up to 50 lbs

Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics

Perform activities such as typing, standing, or sitting for extended periods of time