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Job Opening: Thermal Hydraulics Experimentalist

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:


Thermal Hydraulics Experimentalist

Reports To

R&D Program Manager and Principal Chemist

Job Duties

The Thermal Hydraulics Engineer/Scientist, under the direction of the R&D Program Manager and Principal Chemist, is primarily responsible for supporting the R&D thermal hydraulics test program. Other responsibilities include:

  • Prepare reports
  • Identify knowledge gaps in thermal hydraulic phenomena and recommend test to bridge the gaps
  • Review thermal hydraulic scaling calculations, evaluation of scaling distortions for experimental test setup
  • Contribute to development of the technology and design by providing data
  • Coordinate with engineering, safety, procurement, quality teams and test suppliers
  • Conduct review of the assessment documents, test reports, procedures, calibration reports, uncertainties and measurement error reports, pre-test simulation reports, software validation reports, etc.
  • Participate in testing activities upon requests
  • Review Computational Fluid Dynamics models and documents
  • Support development of the thermal hydraulic experimental test setups, i.e. scaling-analysis methodology, identification of sensors and instrumentation, measurement locations, identification of test equipment and sizes etc.
  • Development of test matrices with test suppliers
  • Review and interpret test results to improve design and simulation models

Core Competencies

  • Thermodynamics and Heat Transfer
  • Fluid Dynamics
  • Computational Fluid Dynamics
  • Power plant engineering
  • Data analysis
  • Simulation experience
  • 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


  • PhD in science or engineering, or Master’s degree in related field (preference to fluid flow and heat transfer fields) combined with a minimum of 5 years of work experience in research laboratories, with a focus in the power industry related to thermal hydraulic design and analysis
  • Experience in modelling, designing, and building thermal hydraulic loop test rigs and analyzing data produced from tests
  • Ability to review and interpret the simulation results generated by CFD codes (i.e. ANSYS Fluent) and system level thermal hydraulic codes (i.e. Flownex, Aspen, etc.)
  • Demonstrated success in project delivery and the execution of scientific methods
  • Skills and ability to learn a new technology, conduct research and analyze research data, as well as writing scientific reports.
  • Extensive knowledge of thermodynamics and heat transfer fundamentals
  • Knowledgeable in the working principles of pumps and heat exchangers
  • 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 in the nuclear field
  • 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®).