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  3. Staff Multiphysics Modeler
CF

Staff Multiphysics Modeler

Commonwealth Fusion Systems
Devens, MA
Full Time
Posted July 16, 2026
$130k - $200k
Power Generation
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Job Description

About Commonwealth Fusion Systems:

Key Responsibilities

  • Lead the development of an integrated power plant fuel cycle model
  • Develop models for unit operations and incorporate multi-effects in components
  • Develop simulation tools to enable targeted R&D for key fuel cycle technologies
  • Own the fuel cycle simulation tools and models
  • Validate models and identify key R&D requirements to enable validation where there are currently gaps in the literature
  • Collaborate cross-functionally with both internal and external experts to ensure fuel cycle models are feasible, economic and state-of-the-art
  • Develop processes and layouts for fueling subsystem blocks that are communicated through standard engineering documents
  • Generate detailed work plans and define milestones, integrated with R&D, to deliver validated models
  • Provide guidance to colleagues for use of developed modeling tools and outputs
  • Identify emerging trends and opportunities and influence CFSs’s fuel cycle modeling strategy

Requirements

  • Master’s degree or similar experience with 10+ years in chemical engineering, mechanical engineering, physics, materials science, physical chemistry or similar
  • 10+ years experience modeling process systems
  • 10+ years experience in computer programming
  • Expertise with transport phenomena and chemical processes in gasses including demonstrated experience building integrated process models
  • Proven experience as an “expert” to evangelizing solutions and working across teams for shared solutions
  • Experience building and managing large data sets
  • Understanding of scalable simulations
  • Track record in version control
  • Data reduction and results analysis
  • Ability to occasionally lift up to 50 lbs
  • Perform activities such as sitting, typing, standing, stooping, or climbing for extended periods of time
  • Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
  • Willingness to travel or work required nights/weekends/on-call occasionally

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