C
Cfsenergy10d ago
USD 90000–145000/yr

Mechanical Engineer

United StatesUnited States·DevensFull-timemid
EngineeringMechanical Engineer
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Quick Summary

Overview

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,

Technical Tools
EngineeringMechanical Engineer
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.

We are seeking a highly motivated and experienced Mechanical Engineer to join our manufacturing team. In this role, you will be responsible for providing technical expertise during the commissioning, implementation, and integration of manufacturing equipment. You will work closely with our production team to ensure that our manufacturing processes are optimized for efficiency, quality, and safety. Additionally, this position requires coverage or partial coverage for the second shift, as well as support for Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) of equipment.

  • Provide technical expertise during the commissioning, implementation, and integration of manufacturing equipment
  • Support Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) of equipment
  • Troubleshoot mechanical issues and provide solutions to ensure equipment operates efficiently
  • Collaborate with production and engineering teams to optimize manufacturing processes and improve equipment performance
  • Drive continuous improvement initiatives for manufacturing equipment to increase efficiency, reduce downtime, and improve quality.
  • Conduct root cause analysis and implement corrective actions to resolve manufacturing issues
  • Ensure compliance with all safety requirements
  • Create and maintain Process and Instrumentation Diagrams (P&IDs)
  • Understand and apply Geometric Dimensioning and Tolerancing (GD&T) principles
  • Work with external vendors and suppliers to ensure the timely delivery of equipment and materials
  • Conceptualize and detail new manufacturing equipment for scaled up manufacturing processes
  • Run experiments to determine the feasibility of new manufacturing processes and translate those learnings into practical designs
  • Bachelor's degree in Mechanical Engineering or a related field
  • 4+ years of experience in mechanical engineering, with a focus on manufacturing equipment
  • 3+ years of manufacturing equipment and tooling design
  • Strong knowledge of mechanical systems, including hydraulics, pneumatics, and motion control
  • Experience with 3D CAD packages and 2D drawings
  • Experience with Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) of equipment
  • Understanding of GD&T and its application
  • Excellent problem solving and analytical skills
  • Strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams
  • Experience with commissioning and startup of manufacturing equipment
  • Strong knowledge of mechanical systems, including hydraulics, pneumatics, and motion control
  • Experience with production ramp-up and optimization of manufacturing processes
  • Experience with automated equipment and robotics
  • Ability to lift up to 50 lbs occasionally
  • Perform activities such as typing, standing, stooping, and sitting, for extended periods of time
  • Willingness to occasionally travel or work required nights/weekends/on-call
  • Dedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics
  • Location & Eligibility

    Where is the job
    Devens, United States
    On-site at the office
    Who can apply
    US
    Listed under
    United States

    Listing Details

    Posted
    April 21, 2026
    First seen
    April 21, 2026
    Last seen
    May 2, 2026

    Posting Health

    Days active
    10
    Repost count
    0
    Trust Level
    56%
    Scored at
    May 2, 2026

    Signal breakdown

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    C
    Mechanical EngineerUSD 90000–145000