Job Description
This is a Full-time 16-month role commencing May 2026
For this role in Oakville, Ontario, The hourly wage range for this position is CAD $25 to $35 per hour. The actual wage offered will be determined based on factors such as education, experience, knowledge, skills, abilities, applicable market data for the work location, and internal equity considerations.
Come join us at Terrestrial Energy, a US developer of advanced, Generation IV nuclear reactors. We are growing our workforce to develop and deploy our Integral Molten Salt Reactor (IMSR) small modular nuclear plant to provide cost-competitive, clean firm heat and power to industry.
The Company has recently completed a merger creating a publicly listed operating company (NASDAQ “IMSR”), to secure the capital resources for our next growth phase. With the current alignment of US Federal and State government, as well as industry interest in Small Modular Reactor (SMR) and advanced reactor technologies such as Terrestrial Energy’s IMSR, there is today a unique and compelling opportunity to participate in the execution of the company’s growth business plan.
The Company is building a team of high-performing business professionals and leaders in engineering, R&D, product management and business development areas at our Charlotte, North Carolina headquarters and future project sites. We are looking for talented individuals who can help build the organization, processes, and goal-orientated corporate culture to lead the company in our expansion. We are seeking people who:
Have US market experience and perspectives bringing good judgement and innovative approaches to problem solving and business plan execution.
Have demonstrated exceptional performance in past engineering projects.
Offer exceptional leadership and team building capabilities.
Have a deep understanding of the requirements for advanced reactor development.
Can assist in the creation of the discipline and organized company structure, and contributed to a culture of excellence, necessary for the development and deployment of the Company’s IMSR plant.
Can thrive in a fast growing and opportunity business environment, and are capable of flexibility and adaptability at a time of organizational change.
Have the specific skillset and experience for the following role:
The Systems Engineering Intern, under the direction of the Systems Engineering Manager, supports the development, integration, and coordination of Terrestrial Energy’s IMSR technology. This role is critical in assisting with systems-level definition, requirements management, interface coordination, and documentation across multidisciplinary engineering teams. The successful candidate will gain hands-on experience applying systems engineering principles in a highly regulated advanced nuclear technology environment, while contributing meaningfully to the Reactor Pilot Program and associated development activities.
Other Responsibilities Include:
Systems Engineering
Support development, maintenance, and organization of system requirements for IMSR systems and subsystems
Assist with requirements decomposition, allocation, and traceability across system, subsystem, and component levels
Help maintain system descriptions, functional breakdowns, and system architecture documentation
Support identification, documentation, and tracking of system assumptions, constraints, and design decisions
Assist with configuration management and change impact assessments from a systems perspective
Integration & Interfaces
Support identification and documentation of interfaces between engineering disciplines (mechanical, electrical, I&C, safety, licensing)
Assist in maintaining Interface Control Documents (ICDs) and interface registers
Participate in cross-functional technical meetings and support follow-up on actions and interface issues
Help track integration risks and dependencies across systems and subsystems
Verification & Validation
Assist in developing and maintaining requirements verification matrices
Support definition of verification methods (analysis, inspection, test, demonstration) for system requirements
Help organize verification evidence and documentation to support future testing and validation activities
Support systems-level thinking aligned with the V-model engineering approach
Documentation & Reporting
Prepare and update technical documentation including system summaries, requirement listings, and decision logs
Assist in preparing figures, block diagrams, and presentation material for internal design reviews
Maintain organized records within document control and configuration management systems
Support adherence to engineering processes and quality requirements
Collaboration
Work closely with Systems Engineering, Design Engineering, Safety, Licensing, and Project Management teams
Participate in design reviews and technical discussions to gain exposure to integrated reactor development
Interface with engineers across multiple disciplines to support coordinated system development
Contribute to continuous improvement of systems engineering tools and practices
Core Competencies:
Written and verbal communication
Project and task coordination
Technical documentation practices
Quality and compliance awareness
Digital engineering tools
Team collaboration and support
Analytical and problem-solving skills
Data-driven decision support
Initiative and willingness to learn
Planning and organizational skills
Adaptability to change
Requirements:
Education
Currently enrolled in a Bachelor’s or Master’s degree program in: Mechanical Engineering, Nuclear Engineering, Systems Engineering, Electrical Engineering, Chemical Engineering, Or a related engineering discipline.
Experience
Academic or co-op experience in engineering design, analysis, or technical documentation
Exposure to systems engineering concepts through coursework, projects, or internships
Technical Skills
Strong analytical and problem-solving skills
Understanding of systems thinking and interdisciplinary engineering principles
Proficiency with Microsoft Office tools (Excel, Word, PowerPoint)
Ability to read and understand technical documentation and engineering drawings
Familiarity with requirements management tools or modeling tools is an asset
Professional Skills
Strong attention to detail and organization
Clear technical writing and documentation skills
Ability to manage multiple tasks and meet deadlines
Willingness to learn and take initiative
Effective communication skills within a technical team environment
Assets:
Coursework or experience in systems engineering, requirements management, or project engineering
Familiarity with the V-model of systems engineering
Exposure to regulated industries (nuclear, aerospace, energy, medical, etc.)
Familiarity with tools such as DOORS, Jama, Polarion, SysML, or similar (academic exposure acceptable)
Interest in advanced reactor technologies or clean energy systems
Benefits:
Mentoring/Coaching with Senior Employees/Leaders
Collaborative and supportive work environment
Opportunities to network across departments
Hands-on experience with real projects
Please submit a Resume, Cover Letter, and Transcripts (Unofficial copies are acceptable at this stage.)
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:
eCFR :: Appendix A to Part 810, Title 10 - Generally Authorized Destinations
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 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
For this role in Oakville, Ontario, The hourly wage range for this position is CAD $25 to $35 per hour. The actual wage offered will be determined based on factors such as education, experience, knowledge, skills, abilities, applicable market data for the work location, and internal equity considerations.
Come join us at Terrestrial Energy, a US developer of advanced, Generation IV nuclear reactors. We are growing our workforce to develop and deploy our Integral Molten Salt Reactor (IMSR) small modular nuclear plant to provide cost-competitive, clean firm heat and power to industry.
The Company has recently completed a merger creating a publicly listed operating company (NASDAQ “IMSR”), to secure the capital resources for our next growth phase. With the current alignment of US Federal and State government, as well as industry interest in Small Modular Reactor (SMR) and advanced reactor technologies such as Terrestrial Energy’s IMSR, there is today a unique and compelling opportunity to participate in the execution of the company’s growth business plan.
The Company is building a team of high-performing business professionals and leaders in engineering, R&D, product management and business development areas at our Charlotte, North Carolina headquarters and future project sites. We are looking for talented individuals who can help build the organization, processes, and goal-orientated corporate culture to lead the company in our expansion. We are seeking people who:
Have US market experience and perspectives bringing good judgement and innovative approaches to problem solving and business plan execution.
Have demonstrated exceptional performance in past engineering projects.
Offer exceptional leadership and team building capabilities.
Have a deep understanding of the requirements for advanced reactor development.
Can assist in the creation of the discipline and organized company structure, and contributed to a culture of excellence, necessary for the development and deployment of the Company’s IMSR plant.
Can thrive in a fast growing and opportunity business environment, and are capable of flexibility and adaptability at a time of organizational change.
Have the specific skillset and experience for the following role:
The Systems Engineering Intern, under the direction of the Systems Engineering Manager, supports the development, integration, and coordination of Terrestrial Energy’s IMSR technology. This role is critical in assisting with systems-level definition, requirements management, interface coordination, and documentation across multidisciplinary engineering teams. The successful candidate will gain hands-on experience applying systems engineering principles in a highly regulated advanced nuclear technology environment, while contributing meaningfully to the Reactor Pilot Program and associated development activities.
Other Responsibilities Include:
Systems Engineering
Support development, maintenance, and organization of system requirements for IMSR systems and subsystems
Assist with requirements decomposition, allocation, and traceability across system, subsystem, and component levels
Help maintain system descriptions, functional breakdowns, and system architecture documentation
Support identification, documentation, and tracking of system assumptions, constraints, and design decisions
Assist with configuration management and change impact assessments from a systems perspective
Integration & Interfaces
Support identification and documentation of interfaces between engineering disciplines (mechanical, electrical, I&C, safety, licensing)
Assist in maintaining Interface Control Documents (ICDs) and interface registers
Participate in cross-functional technical meetings and support follow-up on actions and interface issues
Help track integration risks and dependencies across systems and subsystems
Verification & Validation
Assist in developing and maintaining requirements verification matrices
Support definition of verification methods (analysis, inspection, test, demonstration) for system requirements
Help organize verification evidence and documentation to support future testing and validation activities
Support systems-level thinking aligned with the V-model engineering approach
Documentation & Reporting
Prepare and update technical documentation including system summaries, requirement listings, and decision logs
Assist in preparing figures, block diagrams, and presentation material for internal design reviews
Maintain organized records within document control and configuration management systems
Support adherence to engineering processes and quality requirements
Collaboration
Work closely with Systems Engineering, Design Engineering, Safety, Licensing, and Project Management teams
Participate in design reviews and technical discussions to gain exposure to integrated reactor development
Interface with engineers across multiple disciplines to support coordinated system development
Contribute to continuous improvement of systems engineering tools and practices
Core Competencies:
Written and verbal communication
Project and task coordination
Technical documentation practices
Quality and compliance awareness
Digital engineering tools
Team collaboration and support
Analytical and problem-solving skills
Data-driven decision support
Initiative and willingness to learn
Planning and organizational skills
Adaptability to change
Requirements:
Education
Currently enrolled in a Bachelor’s or Master’s degree program in: Mechanical Engineering, Nuclear Engineering, Systems Engineering, Electrical Engineering, Chemical Engineering, Or a related engineering discipline.
Experience
Academic or co-op experience in engineering design, analysis, or technical documentation
Exposure to systems engineering concepts through coursework, projects, or internships
Technical Skills
Strong analytical and problem-solving skills
Understanding of systems thinking and interdisciplinary engineering principles
Proficiency with Microsoft Office tools (Excel, Word, PowerPoint)
Ability to read and understand technical documentation and engineering drawings
Familiarity with requirements management tools or modeling tools is an asset
Professional Skills
Strong attention to detail and organization
Clear technical writing and documentation skills
Ability to manage multiple tasks and meet deadlines
Willingness to learn and take initiative
Effective communication skills within a technical team environment
Assets:
Coursework or experience in systems engineering, requirements management, or project engineering
Familiarity with the V-model of systems engineering
Exposure to regulated industries (nuclear, aerospace, energy, medical, etc.)
Familiarity with tools such as DOORS, Jama, Polarion, SysML, or similar (academic exposure acceptable)
Interest in advanced reactor technologies or clean energy systems
Benefits:
Mentoring/Coaching with Senior Employees/Leaders
Collaborative and supportive work environment
Opportunities to network across departments
Hands-on experience with real projects
Please submit a Resume, Cover Letter, and Transcripts (Unofficial copies are acceptable at this stage.)
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:
eCFR :: Appendix A to Part 810, Title 10 - Generally Authorized Destinations
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 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
💡 Quick Summary
Seeking a career-building opportunity? The Systems Engineering Intern position is now open for candidates interested in the IT Engineer & Developer Jobs sector. This role in Oakville offers a professional environment and growth potential.
Requirement Snapshot: Candidates should possess basic communication skills, a proactive attitude, and the ability to work in a team. Experience in IT Engineer & Developer Jobs is a plus.