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Senior Manager, Mechanical Engineering -- Vacuum Vessel

Date Posted: Oct 11, 2026
Yearly: USD - USD

Job Detail

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    Location Devens, Massachusetts, United States of America
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    Job Type: Permanent
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    Career Level:
  • group
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    Experience:
  • male
    Gender: No Preference
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    Apply Before: Jan 10, 2027

Job Description

Overview

Job DescriptionJob DescriptionAbout 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 Manager, Mechanical Engineering CFS is looking for a creative, experienced mechanical engineering manager to lead the design and delivery of the ARC vacuum vessel. Commonwealth Fusion Systems is currently designing the ARC fusion power plant. Within the ARC plant, the ARC tokamak consists of many large mechanical structures that support the large loads and extreme conditions of the fusion plasma. One of the newest and most interconnected components in ARC will be the vacuum vessel, a hundred-ton mechanical structure that surrounds the fusion plasma. This structure must withstand extreme heat fluxes on the plasma-facing side and effectively remove this heat via flowing molten salt on the other side of the vessel. This vessel must also be replaceable via a remote handling system during regular plant maintenance cycles. Come lead the design of a critical portion of the world's first fusion power plant! What you'll do: Lead a team of mechanical engineers to plan and deliver on the ARC vacuum vessel and connected systemsOversee the full design lifecycle, from initial concept and CAD modeling to hardware procurement and assemblyInterface the design of the vacuum vessel with many other systems in the ARC plant, coordinating with other engineering teams to ensure the best overall design for the productProvide hands-on technical leadership to solve complex, multi-disciplinary design challenges and manage risks in new environments and with novel materialsWork with the supply chain and materials and processing teams to identify and develop suppliers for the vacuum vesselProactively manage schedule and budget to deliver a critical component to the ARC fusion power plantManage all aspects of the group's talent, including hiring, training, and setting clear performance expectationsPromote a culture of resilience and grit, ensuring the team consistently follows through on assignments despite technical hurdlesWhat we're looking for: Bachelors Degree in Mechanical Engineering or a closely related degree10+ years experience in mechanical engineering or closely related fieldsExperience working on a multi-disciplinary engineering projectExperience designing and delivering large metallic structuresExperience with structural analysisExperience with fabrication of complex large structuresExperience working in dynamic R&D environments, including novel materials and locationsBroad knowledge of engineering sufficient to interact with multi-disciplinary engineering teamsKnowledge of finite element structural analysisKnowledge of fluid cooling of mechanical structuresAbility to adapt to a rapidly changing environmentBonus points for: Experience designing systems operating at high temperature (600C / 1100F)Must-have requirements: Perform activities such as stooping and sitting for extended periods of timeWillingness to occasionally travel or work required nights/weekends/on-callDedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experienc

Key responsibilities

Not specified in the original listing.

Required skills

  • Engineering

What the company offers

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Skills Required

Company Overview

Devens, Massachusetts, United States of America

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