Senior Multiphysics Fuel Cycle Modeler

Cfsenergy; Harvard (MA); On-site; USD 150,000 - 190,000; Full time

Job summary

Commonwealth Fusion Systems seeks a Staff Multiphysics Modeler to develop an integrated fuel cycle model for ARC, collaborating with the tritium program and process engineering teams. The role focuses on first-principles multiphysics simulations integrated with industrial process models to support technology development and subsystem integration for key fuel cycle systems.

The ideal candidate brings a strong background in heat and mass transport, comfort with rapid tool-building, and the ability

Qualifications

• Advanced degree with 10+ years of modeling chemical/process systems.
• Expert in heat and mass transport and transport phenomena.
• Proven experience building integrated process models and cross-functional collaboration.
• Experience with Python and/or Matlab.
• Experience with multiphysics tools such as COMSOL and process simulators like HYSYS.
• Willingness to travel and work nights/weekends/on-call as needed.

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 R&D requirements for gaps in literature.
• Collaborate cross-functionally to ensure feasibility, economic viability, and state-of-the-art approaches.
• Develop processes and layouts for fueling subsystem blocks communicated through engineering docs.
• Generate detailed work plans and milestones aligned with R&D for validated models.
• Provide guidance to colleagues on modeling tools and outputs.
• Identify emerging trends and influence fuel cycle modeling strategy.

Skills

Multiphysics modeling

Cross-functional collaboration

Data analysis

First principles approach

Model validation

Education

Master’s degree or equivalent with 10+ years experience

Tools

Python

Matlab

COMSOL

HYSYS

Confluence/JIRA

Job description

Commonwealth Fusion Systems seeks a Staff Multiphysics Modeler to develop an integrated fuel cycle model for ARC, collaborating with the tritium program and process engineering teams. The role focuses on first-principles multiphysics simulations integrated with industrial process models to support technology development and subsystem integration for key fuel cycle systems.

The ideal candidate brings a strong background in heat and mass transport, comfort with rapid tool-building, and the ability