Interested in helping us transform thermal and electric energy?

Become a part of the leading Generation-IV nuclear plant development team.

Terrestrial Energy is developing for near-term commercial operation, a zero-emissions cogeneration plant for global industry using its proprietary Integral Molten Salt Reactor (IMSR) fission technology in an innovative, small and modular plant design. The IMSR is a non-Light Water Reactor of the Generation IV class that operates at the high temperature required for broad industrial relevance with transformative economic potential. The IMSR plant is capable of grid-based electric power generation and industrial cogeneration in many energy-intensive industries, including petrochemical and chemical synthesis for hydrogen and ammonia production. The IMSR plant offers a near 50 percent improvement in efficiency of electric power generation compared to Light Water Reactor nuclear plants. Its industrial cogeneration capability delivers to today’s markets industrial competitiveness, security of energy, and zero-emissions industrial production. The IMSR plant’s use of existing industrial materials, components, and fuels supports its near-term deployment, setting the stage for a rapid global decarbonization of the primary energy system. 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:

The Safety Manager, under the direction of the Engineering Director, is primarily responsible for leading and building our safety analysis team, establishing and growing a world-class safety analysis organization while managing all aspects of safety analysis and supporting regulatory compliance and licensing activities for the development and deployment of our IMSR technology. The successful candidate will recruit, develop, and lead a team of safety engineers and analysts, collaborate closely with the design and licensing teams, and ensure the safety case for our advanced reactor design meets all regulatory requirements and demonstrates the inherent safety features of our technology. Other responsibilities include:

Leadership and Team Management

• Lead, mentor, and develop a team of Safety Analysis Engineers, Safety Analysts, and Specialists
• Establish team priorities, allocate resources, and manage workload across multiple projects
• Conduct performance evaluations and support professional development of team members
• Foster a culture of technical excellence, safety consciousness, and continuous improvement
• Recruit and build a high-performing safety analysis team
• Establish and maintain safety analysis standards, procedures, and best practices
• Manage departmental budget and resource planning

Safety Analysis Program Management

• Oversee deterministic and probabilistic safety analyses for the IMSR design
• Direct the development and analysis of Design Basis Accidents (DBAs) and Beyond Design Basis Accidents (BDBAs)
• Ensure comprehensive transient and accident analyses using thermal-hydraulic and neutronics codes
• Oversee evaluation of plant response to postulated initiating events
• Manage assessment of safety systems and engineered safety features performance
• Direct dose consequence and radiological release scenario analyses
• Oversee sensitivity and uncertainty analyses programs
• Ensure integration of safety analyses across multiple engineering project teams

Regulatory and Licensing Leadership

• Prepare safety analysis chapters for licensing documentation including Preliminary Safety Analysis Report (PSAR) and Final Safety Analysis Report (FSAR) for NRC/CNSC licensing
• Oversee development of DOE-required safety analyses including Preliminary Documented Safety Analysis (PDSA) and Documented Safety Analysis (DSA) in accordance with DOE-STD-3009
• Direct development of key safety decisions including target performance of structures, systems, and components (SSCs), safety system responses to normal and off-normal operations, and facility security considerations
• Establish classification rules and terminology for safety SSCs, including application of the hierarchy of controls and Defense in Depth principles to ensure safety
• Oversee analysis of most limiting potential dose consequences (e.g., unmitigated or Maximum Hypothetical Accident scenarios) to support Natural Phenomena Hazard (NPH) Design Category (NDC) categorization
• Ensure validity assessment of selected safety document format and content, applicability of SSC classifications, and other graded approaches
• Lead regulatory review processes and coordinate responses to technical questions from regulatory bodies (CNSC, NRC, DOE)
• Ensure all analyses comply with applicable regulatory requirements and guidance
• Represent the company in regulatory meetings and technical discussions
• Oversee development of technical specifications and operational limits
• Manage external consultants and contractors supporting safety analysis activities

Strategic Planning and Communication

• Develop long-term safety analysis strategy aligned with company licensing and deployment goals
• Collaborate closely with licensing team to support regulatory submissions and licensing strategy
• Identify and implement improvements to safety analysis methods and tools
• Present safety analysis results and strategies to senior leadership and board of directors
• Interface with Engineering Director and executive team on safety-related decisions
• Coordinate with other engineering managers to ensure integrated safety approach
• Support business development activities with safety analysis expertise
• Represent the company at industry conferences and technical forums

Modeling and Simulation

• Develop and validate computer models for safety analysis using industry-standard codes
• Build thermal-hydraulic models of reactor systems and components
• Perform single and coupled physics simulations
• Validate models against experimental data and benchmarks
• Document modeling assumptions, methodologies, and results

Documentation and Reporting

• Prepare detailed technical reports documenting analysis methodologies, assumptions, and results
• Create clear visualizations and presentations of analysis results
• Maintain comprehensive documentation of safety analysis activities
• Contribute to technical publications and conference papers
• Develop and maintain analysis procedures and quality assurance documentation

Collaboration

• Work closely with Physics, Thermal-Hydraulics, Systems Engineering, and Design Teams
• Interface with external partners including national laboratories and consultants
• Participate in design reviews and technical meetings
• Support integrated safety assessments across multiple disciplines
• Contribute to continuous improvement of safety analysis methods

Quality Assurance and Documentation

• Ensure comprehensive documentation of safety analysis methodologies, assumptions, and results
• Maintain quality assurance program for safety analysis activities
• Oversee configuration management of safety analysis models and tools
• Ensure compliance with nuclear quality assurance requirements (CSA N286.7, 10 CFR 50 Appendix B, NQA-1, DOE O 414.1D)
• Manage internal and external technical reviews of safety analysis work

Requirements

Education

• M.Sc. or Ph.D. in Nuclear Engineering, Mechanical Engineering, Chemical Engineering, or related field;
• Professional Engineer (P.Eng.) designation or equivalent professional certification preferred

Experience

• Minimum 8 years of experience in nuclear safety analysis
• Minimum 3 years of leadership or management experience, preferably managing technical teams
• Demonstrated experience leading safety analysis programs for nuclear facilities
• Experience with regulatory licensing processes (NRC, CNSC, or DOE)
• Proven track record of successful regulatory interactions and licensing document preparation
• Experience managing multiple projects and priorities simultaneously

Technical Skills

• Proficiency with thermal-hydraulic analysis codes (Flownex, REPLAP5, or similar)
• Knowledge of neutronics codes (MCNP, SCALE, Serpent, or similar)
• Understanding of severe accident phenomena and analysis methods
• Familiarity with probabilistic risk assessment (PRA) concepts
• Strong analytical and problem-solving skills
• Proficiency with technical computing tools (MATLAB, Python, or similar)
• Experience with data analysis and visualization

Professional Skills

• Excellent technical writing and documentation skills
• Strong attention to detail and commitment to quality
• Ability to work independently and as part of a team
• Effective communication skills for technical and non-technical audiences
• Project management and time management capabilities
• Critical thinking and ability to defend technical positions

Assets

• Experience with advanced reactor designs or Generation IV systems
• Familiarity with molten salt reactor technology and safety characteristics
• Experience with US NRC, US DOE, or Canadian CNSC licensing processes
• Knowledge of relevant regulatory guides and industry standards (NUREG, CSA, IAEA, DOE STD-1189, DOE-STD-3009, 10 CFR 830)
• Experience with severe accident analysis codes
• Background in probabilistic risk assessment (PRA) or probabilistic safety assessment (PSA)
• Experience with uncertainty quantification methods
• Knowledge of source term analysis and radiological consequence modeling
• Knowledge of international nuclear safety standards (IAEA, WENRA)
• Experience with digital instrumentation and control safety analysis
• Previous experience in consulting or vendor roles supporting multiple nuclear projects
• Publications in peer-reviewed journals or conference proceedings
• Active participation in industry standards development (ANS, ASME, CSA)

Benefits

• Extended Healthcare Plan (Medical, Disability, Dental & Vision), + an additional Health Spending Account
• A vacation policy designed to support your work-life balance
• EAP Programs available to you and your family
• Wellness Subsidy
• Annual Performance Review
• Paid United Way Volunteer Days – A chance to give back!
• Career development opportunities
  

Please submit a Resume and Cover Letter.

Candidates must be legally authorized to work in Canada without the need for sponsorship for employment visa status.

Terrestrial Energy requires that the successful candidate be able to access and use information subject to U.S. Export Control Laws, which mandate all citizenships (including dual citizenships) be from the U.S. Department of Energy’s List of Generally Authorized Countries (10 CFR Part 810 Appendix A and can be found here:

https://www.ecfr.gov/current/title-10/chapter-III/part-810/appendix-Appendix%20A%20to%20Part%20810) unless a specific authorization from the U.S. Department of Energy is obtained or unless you are a U.S. citizen, U.S. national, U.S. permanent resident, or protected individual under the U.S. Immigration and Naturalization Act (8 U.S.C. 1324b(a)(3)). Additional information can be found here: https://www.energy.gov/nnsa/10-cfr-part-810.

Terrestrial Energy is an Equal Opportunity Employer – Minority / Female / Disability / Gender Identity / Sexual Orientation / Age. The Company encourages applications from all qualified individuals.

If you require accommodation during the application or interview process, please advise us as soon as possible so appropriate arrangements can be made. If you require technical support in a format that is accessible to you, please contact Accessibility@terrestrialenergy.com