Systems Engineer

• Develop, maintain, and manage system requirements for IMSR systems and subsystems in coordination with design engineering, safety, and licensing teams.
• Perform requirements decomposition, allocation, and traceability across system, subsystem, and component levels.
• Develop and maintain system descriptions, functional breakdowns, and system architecture documentation.
• Identify, document, and track system assumptions, constraints, and design decisions throughout the engineering lifecycle.
• Support configuration management activities and conduct change impact assessments from a systems perspective.

• Identify and document interfaces between engineering disciplines (mechanical, electrical, I&C, safety, licensing) and between systems and subsystems.
• Develop and maintain Interface Control Documents (ICDs) and interface registers to manage system integration.
• Facilitate cross-functional technical coordination meetings and manage follow-up on interface issues and action items.
• Identify, assess, and track integration risks and dependencies across systems and subsystems.

• Develop and maintain requirements verification matrices linking requirements to verification methods.
• Define verification methods (analysis, inspection, test, demonstration) for system requirements in accordance with the V-model approach.
• Coordinate verification planning activities across engineering disciplines and support the organization of verification evidence.
• Support validation planning to ensure system-level performance meets stakeholder needs and mission objectives.

• Prepare technical documentation including system summaries, requirements specifications, design decision records, and traceability reports.
• Develop figures, block diagrams, functional flow diagrams, and presentation materials for design reviews and stakeholder communications.
• Maintain organized technical records within document control and configuration management systems in compliance with quality requirements.
• Support the preparation of engineering reports, technical memoranda, and regulatory submissions requiring systems-level analysis.

• Work closely with Systems Engineering, Design Engineering, Safety, Licensing, and Project Management teams to ensure integrated system development.
• Participate in design reviews, technical assessments, and cross-functional working groups to provide systems engineering perspectives.
• Interface with engineers across multiple disciplines to coordinate system-level decisions and ensure alignment with project objectives.
• Contribute to the continuous improvement of systems engineering tools, processes, and best practices.

• Systems thinking and integration
• Requirements analysis and management
• Technical documentation and communication
• Interface coordination and control
• Verification and validation planning
• Configuration management
• Analytical and problem-solving skills
• Cross-functional collaboration
• Project coordination and planning
• Quality and compliance awareness
• Adaptability to change

• Bachelor's degree in Systems Engineering, Mechanical Engineering, Nuclear Engineering, Electrical Engineering, Chemical Engineering, or a related engineering discipline.
• Master's degree is considered an asset.

• Minimum of 4 years of engineering experience in design, analysis, or systems integration roles.
• Demonstrated experience applying systems engineering principles in multidisciplinary engineering projects.
• Experience with requirements management, interface control, or technical documentation in engineering environments.

• Strong analytical and problem-solving capabilities with the ability to think at the system level.
• Understanding of systems engineering lifecycle, methodologies, and interdisciplinary engineering principles.
• Proficiency with Microsoft Office tools (Excel, Word, PowerPoint, Visio).
• Ability to read, interpret, and create technical documentation, engineering drawings, and system diagrams.
• Experience with or exposure to requirements management tools (e.g., Codebeamer, DOORS, Jama, Polarion, Innoslate) is preferred.
• Familiarity with Product Lifecycle Management (PLM) tools or modeling tools (e.g., SysML) is an asset.

• Excellent technical writing and documentation skills with strong attention to detail.
• Strong organizational skills and ability to manage multiple tasks and priorities simultaneously.
• Effective verbal and written communication skills for technical and non-technical audiences.
• Ability to work collaboratively in cross-functional teams and build strong working relationships.
• Self-motivated with the ability to work independently and take initiative.
• Flexibility to adapt to evolving project requirements and organizational changes.

• Experience in the nuclear industry (PWR/BWR/CANDU, SMR, advanced reactors, or other nuclear technologies).
• Experience in other highly regulated industries (aerospace, defense, medical devices, energy).
• Familiarity with the V-model of systems engineering and verification/validation methodologies.
• Knowledge of nuclear quality assurance standards (CSA N286 series, ASME NQA-1, 10 CFR Part 50 Appendix B).
• Familiarity with Canadian (CNSC) and/or US (NRC, DOE) nuclear regulatory frameworks.
• Understanding of systems engineering standards (ISO/IEC/IEEE 15288, INCOSE, NASA Systems Engineering Handbook).
• Experience with Model-Based Systems Engineering (MBSE) approaches and tools.
• Knowledge of CCOMIT (Constructability, Commissioning, Operability, Maintainability, Inspectability, Testability) principles.
• Professional Engineer (P.Eng. or PE) designation or eligibility.
• INCOSE certification (ASEP or CSEP) or working toward certification.
• Interest in or passion for advanced reactor technologies and clean energy systems.

• A vacation policy designed to support your work-life balance
• EAP Programs available to you and your family
• Wellness Subsidy

• Paid 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 the US 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.

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.

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 Inc. is an equal opportunity employer and does not discriminate on the basis of any legally protected status or group.

We encourage 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