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Job Opening: CFD Simulation Engineer

Company Brief

Terrestrial Energy is a developer of Generation IV advanced nuclear power plants that use its proprietary Integral Molten Salt Reactor (IMSR®) technology. IMSR® technology represents true innovation in cost reduction, versatility and functionality of nuclear power plants. IMSR® power plants will provide zero-carbon, reliable, dispatchable, cost-competitive electric power and high-grade industrial heat for use in many industrial applications, such as chemical synthesis and desalination, and in so doing extend the application of nuclear energy far beyond electric power markets. We have the potential to make important contributions to industrial competitiveness, energy security, and economic growth. Our deployment will support rapid global decarbonization of the primary energy system by displacing fossil fuel combustion across a broad spectrum. Using an innovative design, and proven and demonstrated molten salt reactor technology, we are engaged with regulators and industrial partners to complete IMSR® engineering and to commission first IMSR® power plants in the late 2020s. To execute this plan, we are now looking to add talented people to the team, each of whom will:

  • improve our team by adding diverse perspectives and innovative ways of problem solving
  • have demonstrated exceptional results in engineering projects
  • be a team player with the ability to collaborate closely and interact with other groups
  • be flexible and adaptable to change
  • have skillset and experience that relate to the following role:


Computational Fluid Dynamics (CFD) Simulation Engineer

Reports To

Thermal Hydraulics Manager


Oakville, ON

Job Duties

The CFD Simulation Engineer, under the direction of Thermal Hydraulics Manager, is primarily responsible for CFD simulation, analysis and R&D support. Other responsibilities include:

  • Determine simulation approach, boundary conditions and scope
  • Prepare meshes for 2D and 3D models for various geometries in the IMSR® vessel
  • Use ANSYS Fluent to develop advanced CFD models
  • Perform steady state and transient simulations; sensitivity analysis and optimization studies
  • Use CAD tool (PTC CREO) to modify 3D models to improve the design
  • Develop user defined codes in programming language to support simulations
  • Perform post – processing of the simulation results and prepare reports
  • Present the simulation results to the higher management to support decision making
  • Perform code-to-code validation with other integral design codes, and comparison with experimental results
  • Coordinate with other disciplines such as physics, safety and mechanical
  • Contribute in the design development of the IMSR® technology
  • Support development of the thermal hydraulic experimental test setups, review and interpret test results to improve design and simulation models
  • Review assessment documents and provide comments

Core Competencies

  • Computational Fluid Dynamics (CFD)
  • Thermodynamics and Heat Transfer
  • Fluid Dynamics
  • Simulation experience (competency in modelling natural convection and conjugate heat transfer)
  • Communication
  • Critical Thinking
  • Decision Making
  • Problem Solving
  • Results Orientation
  • Team player with the ability to collaborate and interact with other groups
  • Flexible and adaptable to change


  • M.S. or Ph.D. degree in mechanical or engineering related to thermal fluid sciences
  • Expert user of ANSYS Fluent
  • Minimum 3 years of work experience in CFD applications
  • Working knowledge of CAD tool, preferably PTC CREO
  • Working knowledge of any programming language such as C#, C++ or Python
  • Extensive knowledge of thermodynamics, heat transfer and fluid dynamics fundamentals
  • Skills and ability to learn new technology
  • Knowledge of CSA N286.7-16 standard
  • Strong problem identification and problem resolution skills
  • Flexibility to adjust to shifting priorities and deadlines
  • Exceptional interpersonal and communication (both written and verbal) skills
  • Skilled at developing and maintaining strong relationships across all levels of the organization and with external customers and vendors


  • Education / experience in the nuclear field
  • Registered as P.Eng. in Professional Engineers Ontario
  • Knowledge of molten salt nuclear reactor working principles


TEI values diversity in its workforce and encourages applications from all qualified individuals. TEI is an Equal Opportunity Employer – Minority / Female / Disability / Gender Identity / Sexual Orientation / Age

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Learn More About Terrestrial Energy

Terrestrial Energy is an industry-leading technology company committed to delivering reliable, emission-free, and cost-competitive nuclear energy with a truly innovative advanced reactor design, the Integral Molten Salt Reactor (IMSR®).