Full-Time

Manufacturing Engineer

Posted on 10/31/2025

Commonwealth Fusion Systems

Commonwealth Fusion Systems

1,001-5,000 employees

Develops high-temperature superconducting fusion magnets

Compensation Overview

$90k - $145k/yr

Devens, MA, USA

In Person

Category
Mechanical Engineering (1)
Required Skills
CAD
AutoCAD
SolidWorks
Requirements
  • Bachelor’s degree in Manufacturing Engineering, Mechanical Engineering, Industrial Engineering, or related field
  • 2+ years of experience in a manufacturing or production engineering role
  • Strong knowledge of Lean Manufacturing, Six Sigma, and quality systems
  • Proficient in CAD software (SolidWorks, AutoCAD, etc.) and manufacturing ERP systems
  • Excellent analytical and problem-solving skills
  • Strong communication and teamwork abilities
  • Ability to work in a fast-paced, team-oriented environment
  • 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
Responsibilities
  • 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
Desired Qualifications
  • Knowledge of statistical process control (SPC) and failure modes and effects analysis (FMEA)
Commonwealth Fusion Systems

Commonwealth Fusion Systems

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Commonwealth Fusion Systems builds fusion energy systems that use high-temperature superconducting magnets to confine plasma in tokamaks, making smaller and less expensive machines. Their SPARC project aims to produce net energy from fusion, with ARC envisioned as the first commercial fusion power plant. They sell these fusion systems to energy providers and industries that need lots of power, generating revenue from system sales. Their goal is to deliver cost-competitive, clean fusion energy to help reduce climate change, pursuing a practical, data-driven path in collaboration with MIT.

Company Size

1,001-5,000

Company Stage

Series B

Total Funding

$2.9B

Headquarters

Harvard, Massachusetts

Founded

2018

Simplify Jobs

Simplify's Take

What believers are saying

  • Realta Fusion partnership generates billions in HTS magnet revenue before ARC grid connection.
  • Siemens-NVIDIA digital twin compresses SPARC experimentation from years to weeks.
  • Google buys 200MW from Virginia ARC plant starting early 2030s.

What critics are saying

  • Realta diverts CFS magnet capacity, letting magnetic mirrors commercialize before tokamaks.
  • Helion delivers grid fusion by 2028 via Microsoft deal, stealing hyperscaler contracts.
  • DeepMind AI fails SPARC plasma control, delaying net energy past 2027.

What makes Commonwealth Fusion Systems unique

  • CFS uses HTS magnets for compact tokamak SPARC, enabling net energy by 2027.
  • SPARC at Devens, Massachusetts, assembles vacuum vessel and radial plates for Q>1.
  • CFS manufactures HTS magnets in-house, supplying Realta Fusion's Anvil prototypes.

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Benefits

12.5 Company-wide Holidays

Our vacation policy is 'take vacation'

Our sick time policy is 'get better and try not to make others sick'

Generous parental leave policy

Health Reimbursement

Health, Dependent Care, & Limited Purpose Flexible Spending Accounts

Delta Dental, Blue 20/20 Vision optional

Wellbeing / Headspace coverage

Short-term & long-term disability

Life and AD&D insurance

401K

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

1%

2 year growth

4%
Madison Startups
Apr 2nd, 2026
Realta Fusion, Commonwealth Fusion Systems to partner.

Realta Fusion, Commonwealth Fusion Systems to partner. by Taylor Kennedy Realta Fusion and Commonwealth Fusion Systems (CFS) have formed a strategic partnership for the design and manufacturing of high-temperature superconducting (HTS) magnets that Realta will use to accelerate the commercialization of its energy systems. "Commercializing magnetic mirror fusion systems requires integrating multiple cutting-edge technologies," Realta Fusion CEO Kieran Furlong said in a statement. "By working with the world's leading HTS magnet manufacturer, we are significantly de-risking one of the most critical of these technologies. Knowing that we can get the magnets we need, when we need them, from the best developed supply chain, is a huge leap forward for Realta." According to a release, CFS will develop magnets for Realta's demonstration prototypes as well as its commercial fusion power plants under the agreement. The partnership also includes novel talent-sharing of CFS expertise to support the design, manufacturing, deployment and operation of HTS magnets for magnetic mirror fusion systems.

TechCrunch
Apr 2nd, 2026
CFS sells high-temperature superconducting magnets to Realta Fusion in largest deal yet

Commonwealth Fusion Systems has signed a deal to sell high-temperature superconducting magnets to Realta Fusion, its largest magnet agreement to date. The deal follows a similar arrangement with the University of Wisconsin's WHAM experiment and a technology licensing agreement with Type One Fusion. CFS is leveraging its magnet manufacturing capabilities to generate revenue whilst its demonstration reactor Sparc, now 70% complete, prepares to switch on later this year. The company spent seven years and hundreds of millions building a factory producing high-temperature superconducting tape for fusion applications. The deals help bridge the gap until construction begins on Arc, CFS's commercial-scale power plant planned for Virginia. CFS has raised nearly $3 billion to date, enabling it to build key facilities before competitors.

Yahoo Finance
Apr 2nd, 2026
Realta Fusion and Commonwealth Fusion Systems partner on multi-billion dollar HTS magnet deal

Realta Fusion has formed a strategic partnership with Commonwealth Fusion Systems (CFS) for the design and manufacturing of high-temperature superconducting magnets to accelerate commercialisation of Realta's magnetic mirror fusion energy systems. The agreement, potentially worth multiple billions of dollars, covers magnets for demonstration prototypes and commercial fusion power plants. CFS will leverage its expertise to support design, manufacturing, deployment and operation of magnets for Realta's compact, scalable, modular fusion systems. The partnership formalises a relationship dating to 2020, when CFS provided magnets for the University of Wisconsin-Madison's WHAM experiment, which achieved a world-record 17 tesla magnetic field strength in 2024. Realta, backed by Khosla Ventures and Future Ventures, is one of eight companies in the US Department of Energy's Fusion Milestone Programme.

Benzinga
Mar 23rd, 2026
OpenAI in talks with Helion Energy to secure fusion power supply.

OpenAI in talks with Helion Energy to secure fusion power supply. OpenAI CEO Sam Altman is understood to be holding conversations with Helion Energy as the artificial intelligence company seeks to buy fusion energy. Fusion energy, which mimics the Sun's process of energy creation, offers AI companies like OpenAI a potential source of abundant clean energy. Altman is reportedly in discussions to lock in a fixed share of Helion's output, starting at about 12.5%, sources told Axios. The proposed agreement would give OpenAI access to roughly 5 gigawatts of power by 2030, with plans to scale that up to 50 gigawatts by 2035. Helion aims to achieve "scientific breakeven," where the energy produced surpasses the energy consumed, a milestone no private firm has yet reached, according to Axios. The agreement with OpenAI is still in its early stages, with numerous conditions pending, such as determining a production site for Helion's energy generation. Meanwhile, Helion has already secured a power purchase agreement with Microsoft for 50 megawatts and competes with Commonwealth Fusion Systems, which has deals with Google. Don't Miss Altman, who has invested in Helion, has stepped down from his role as the company's board chair and is not participating in these negotiations, sources told the publication. Altman, who led Helion's $500 million Series E funding round in 2021, owns a significant, though undisclosed, stake in the company. In January 2025, Helion announced a $425 million Series F funding round. Investors included Lightseed Venture Partners, Softbank, Sam Altman, Mithril Capital and Capricorn Investment Group. OpenAI has also presented a 17.5% return for private equity investors as it seeks to establish joint ventures aimed at expanding enterprise AI adoption. Last week it was reported that OpenAI is set to significantly expand its workforce this year. OpenAI has been making significant strides. In February, the company secured $110 billion in a private round, with a pre-money valuation of $730 billion, setting the stage for a potential blockbuster IPO. 3 'Safe' Stocks You Probably Own That Are About to Get Crushed by Tariffs They look stable. Analysts still rate them a buy. But under the hood, their supply chains run straight through the countries getting hit hardest by the new tariff schedule. The 2026 Investor's Cheat Sheet identifies 3 widely-held stocks that look safe but are carrying serious tariff exposure most investors haven't priced in. Check your portfolio before the next earnings cycle lands. This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors. Posted In:

PR Newswire
Jan 6th, 2026
Commonwealth Fusion Systems Accelerates Commercial Fusion With Siemens and Nvidia, Leveraging AI-Powered Digital Twins

Commonwealth Fusion Systems accelerates commercial fusion with Siemens and nvidia, leveraging ai-powered digital twins. News provided by. As part of this initiative, CFS will use the data generated and compiled through the use of the Siemens Xcelerator portfolio of industrial software to build its SPARC fusion machine. A visual illustration of the digital twin will be unveiled at CES 2026 in Las Vegas. DEVENS, Mass., Jan. 6, 2026 /PRNewswire/ - Commonwealth Fusion Systems (CFS), the largest and leading private fusion company, today announced collaborations with NVIDIA and Siemens to develop a digital twin of its SPARC fusion machine that will apply artificial intelligence (AI) and data and project management tools to accelerate commercial fusion. The digital twin will leverage troves of data from the Siemens Xcelerator portfolio of industrial software, including its Designcenter NX for advanced product engineering and Teamcenter product lifecycle management (PLM) tools, which CFS uses to create, catalog, and process machine designs and assemblies. These designs and assemblies can then be used in CFS' modeling and simulation workflows, including the layering of AI-enabled tools. CFS will use NVIDIA Omniverse libraries and OpenUSD to integrate data with classical and AI-powered physics models to create the digital twin of SPARC. This virtual replica of SPARC will provide CFS with a user-friendly way to run simulations, test hypotheses, and quickly compare the experimental results from the machine to the simulations. This ability to rapidly analyze data and iterate will speed CFS' efforts to make fusion energy a commercial reality. "CFS will be able to compress years of manual experimentation into weeks of virtual optimization using the digital infrastructure developed by NVIDIA and Siemens," said Bob Mumgaard, Co-Founder and CEO of CFS. "Through this collaboration, we're demonstrating how AI and integrated digital engineering can accelerate progress from design to grid power. This will allow us to transform how we build and operate fusion machines in the race to commercial fusion." "Delivering commercial fusion demands that we simulate and solve incredibly complex physics problems," said Rev Lebaredian, Vice President, Omniverse and Simulation Technology, NVIDIA. "By using Siemens NX software and NVIDIA Omniverse libraries to create a high-fidelity digital twin of SPARC, CFS will be able to accelerate its engineering and shorten the timeline to clean power." CFS is also using Siemens' digital tools to improve the efficiency of its manufacturing processes and operations at the company's magnet factory in Devens, Massachusetts. "By connecting Siemens Xcelerator with NVIDIA AI visualization libraries, we're demonstrating that end-to-end digital workflows aren't just efficient, they're transformative," said Del Costy, president and managing director, Americas, Siemens Digital Industries Software. "Fusion is complex, but data doesn't lie. When you aggregate real manufacturing intelligence, apply AI, and run thousands of scenarios, you remove guesswork and accelerate innovation. This is the future of industrial engineering." About Commonwealth Fusion Systems Commonwealth Fusion Systems is the world's largest and leading private fusion company. The company's marquee fusion project, SPARC, will generate net energy, paving the way for limitless carbon-free energy. The company has raised almost $3 billion in capital since it was founded in 2018. SPARC(R) and ARC(TM) are trademarks of Commonwealth Fusion Systems(R). Media contacts: Commonwealth Fusion Systems [email protected] SOURCE Commonwealth Fusion Systems

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