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Job Opening: Mechanical 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:


Mechanical Design Engineer

Reports To

Mechanical Engineer

Job Duties

The Mechanical Engineer, under the direction of the Mechanical Engineering Lead, is primarily responsible for design and development of their responsible mechanical systems through the Basic Engineering phase.

Other responsibilities include:

  • Prepare calculations, analysis and assessment documents for the development of the system and equipment design.
  • Prepare the system classification, design requirements and design summary report in accordance with applicable design guides, procedures, and codes and standards
  • Communicate and work with various technical disciplines to understand system design(s) and interfacing requirements
  • Coordinate and interface with the plant layout lead in the development of 3D CAD for the responsible mechanical systems
  • Contribute to timely resolution of mechanical design challenges and address risks
  • Coordinate and support work to other disciplines
  • Conduct presentations to interdisciplinary team and external parties
  • Interface with external vendors, experts and design agencies

Core Competencies

  • Communication
  • Critical Thinking
  • Decision Making
  • Leadership
  • Planning and Organizing
  • Problem Solving
  • Results Orientation
  • Team player with the ability to collaborate and interact with other groups
  • Flexible and adaptable to change


  • Post-secondary degree or diploma in Mechanical Engineering, or alternate degree in a related field
  • An Ontario Professional Engineering designation or eligibility to attain P. Eng.
  • Minimum 8 years of work experience in the design of mechanical systems.
  • Demonstrated success in project delivery and the execution of mechanical design methods.
  • Expert or working knowledge of nuclear pressure boundary codes including ASME Section III Division 1 and Division 5, CSA N285.0 and ASME B31.1
  • 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


  • Working knowledge of ANSYS Mechanical, Creo Parametric, or other 3D modelling and FEA software
  • Experience in the Nuclear Power industry
  • Industry experience in designing systems and components under extreme conditions is in asset
  • Design experience with reactor shutdown or cooling systems
  • Experience related to ASME Section III Appendix XXIII qualification in Design Specifications, Overpressure Protection Reports, and Design Reports

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®).