<div>This is a Full-time 16-month role commencing May 2026 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&amp;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:<ul><li>Have US market experience and perspectives bringing good judgement and innovative approaches to problem solving and business plan execution.</li><li>Have demonstrated exceptional performance in past engineering projects.</li><li>Offer exceptional leadership and team building capabilities.</li><li>Have a deep understanding of the requirements for advanced reactor development.</li><li>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.</li><li>Can thrive in a fast growing and opportunity business environment, and are capable of flexibility and adaptability at a time of organizational change.</li><li>Have the specific skillset and experience for the following role:</li></ul> The Reactor Physics Intern, under the direction of the Physics Manager, is primarily responsible for performing reactor physics analyses and design assessments using reactor physics computer codes and analytical techniques.   Other Responsibilities Include:<ul><li>Perform sensitivity analyses of postulated design concepts and options for reactivity control and power regulation</li><li>Programming in MATLAB and scripting of complex algorithms within both a WINDOWS and LINUX environment</li><li>Analyze graphite performance and graphite structure in a high radiation environment of a molten salt reactor</li><li>Communicate and work with various technical disciplines to understand system design(s) and interfacing requirements</li><li>Prepare written reports of assessments</li><li>Exposure to nuclear design concepts, principles, regulations, codes and standards.</li></ul> Core Competencies:<ul><li>Nuclear engineering</li><li>Reactor physics</li><li>Programming Skills</li><li>Data Analysis and Modeling</li><li>Developing and reporting in an advanced digital engineering program structure</li><li>Critical Thinking</li><li>Decision Making </li><li>Leadership</li><li>Planning and Organizing</li><li>Problem Solving</li><li>Results Orientation</li><li>Team player with the ability to collaborate and interact with other groups</li><li>Flexible and adaptable to change</li></ul> Requirements:Education<ul><li>Master’s degree in Nuclear Engineering or Engineering Physics (either currently enrolled or recent graduate)</li></ul>Technical Skills<ul><li>Proficiency with Microsoft Office tools (Excel, Word, PowerPoint)</li><li>Some knowledge of state-of-the-art Monte Carlo calculation computer codes (such as MCNP, SERPENT and SCALE)</li><li>Proficient or working knowledge in MATLAB</li></ul>Professional Skills<ul><li>Strong analytical and problem-solving skills</li><li>Flexibility to adjust to shifting priorities and deadlines</li><li>Strong attention to detail and organization</li><li>Effective communication skills within a technical team environment</li></ul> Assets:<ul><li>Work or intern experience in physics, with focus in reactor physics. </li><li>Experience in deterministic codes</li><li>Experience in Nuclear Power</li><li>Experience in Radiation Protection</li><li>Knowledgeable in molten salt fueled nuclear reactors and graphite moderator</li></ul>  Benefits:<ul><li>Mentoring/Coaching with Senior Employees/Leaders</li><li>Collaborative and supportive work environment</li><li>Opportunities to network across departments</li><li>Hands-on experience with real projects </li></ul> Please submit a Resume, Cover Letter, and Transcripts (Unofficial copies are acceptable at this stage.) Candidates must be legally authorized to work in USA 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: <a href="https://www.ecfr.gov/current/title-10/chapter-III/part-810/appendix-Appendix%20A%20to%20Part%20810">eCFR :: Appendix A to Part 810, Title 10 -- Generally Authorized Destinations</a> 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: <a href="https://www.energy.gov/nnsa/10-cfr-part-810">https://www.energy.gov/nnsa/10-cfr-part-810</a>. 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 </div>

errestrial Energy is developing revolutionary — not simply evolutionary — fission technology for electric power and hydrogen and much more. To achieve this, we use completely different nuclear technology – a molten salt as coolant and fuel in our Integral Molten Salt Reactor (IMSR®) power plant. With this technologically superior yet proven approach, IMSR® nuclear power plants are on a clear path to market and are more affordable, more cost competitive, and more versatile than conventional nuclear power plants that have been in use commercially for over 60 years.

IMSR® technology can be brought to market quickly, building them in four years to produce electricity or industrial heat at prices competitive with fossil fuels, while emitting no greenhouse gases. The first IMSR® power plants are expected to come online in the late 2020s.

IMSR® technology is today’s reliable and resilient clean energy game changer.

Reactor Physics Intern (Nuclear Engineering)

<div>This is a Full-time 16-month role commencing May 2026 Come join us at Terrestrial Energy, a US developer of advanced, Generation IV nuclear reactors.&nbsp; 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.&nbsp;The Company has recently completed a merger creating a publicly listed operating company &nbsp;(NASDAQ “IMSR”), to secure the capital resources for our next growth phase. &nbsp;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.&nbsp;The Company is building a team of high-performing business professionals and leaders in engineering, R&amp;D, product management and business development areas at our Charlotte, North Carolina headquarters and future project sites.&nbsp; 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.&nbsp; We are seeking people who:<ul><li>Have US market experience and perspectives bringing good judgement and innovative approaches to problem solving and business plan execution.</li><li>Have demonstrated exceptional performance in past engineering projects.</li><li>Offer exceptional leadership and team building capabilities.</li><li>Have a deep understanding of the requirements for advanced reactor development.</li><li>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.</li><li>Can thrive in a fast growing and opportunity business environment, and are capable of flexibility and adaptability at a time of organizational change.</li><li>Have the specific skillset and experience for the following role:</li></ul>&nbsp;The Reactor Physics Intern, under the direction of the Physics Manager, is primarily responsible for performing reactor physics analyses and design assessments using reactor physics computer codes and analytical techniques. &nbsp;&nbsp;Other Responsibilities Include:<ul><li>Perform sensitivity analyses of postulated design concepts and options for reactivity control and power regulation</li><li>Programming in MATLAB and scripting of complex algorithms within both a WINDOWS and LINUX environment</li><li>Analyze graphite performance and graphite structure in a high radiation environment of a molten salt reactor</li><li>Communicate and work with various technical disciplines to understand system design(s) and interfacing requirements</li><li>Prepare written reports of assessments</li><li>Exposure to nuclear design concepts, principles, regulations, codes and standards.</li></ul> Core Competencies:<ul><li>Nuclear engineering</li><li>Reactor physics</li><li>Programming Skills</li><li>Data Analysis and Modeling</li><li>Developing and reporting in an advanced digital engineering program structure</li><li>Critical Thinking</li><li>Decision Making&nbsp;</li><li>Leadership</li><li>Planning and Organizing</li><li>Problem Solving</li><li>Results Orientation</li><li>Team player with the ability to collaborate and interact with other groups</li><li>Flexible and adaptable to change</li></ul> Requirements:Education<ul><li>Master’s degree in Nuclear Engineering or Engineering Physics (either currently enrolled or recent graduate)</li></ul>Technical Skills<ul><li>Proficiency with Microsoft Office tools (Excel, Word, PowerPoint)</li><li>Some knowledge of state-of-the-art Monte Carlo calculation computer codes (such as MCNP, SERPENT and SCALE)</li><li>Proficient or working knowledge in MATLAB</li></ul>Professional Skills<ul><li>Strong analytical and problem-solving skills</li><li>Flexibility to adjust to shifting priorities and deadlines</li><li>Strong attention to detail and organization</li><li>Effective communication skills within a technical team environment</li></ul> Assets:<ul><li>Work or intern experience in physics, with focus in reactor physics.&nbsp;</li><li>Experience in deterministic codes</li><li>Experience in Nuclear Power</li><li>Experience in Radiation Protection</li><li>Knowledgeable in molten salt fueled nuclear reactors and graphite moderator</li></ul> &nbsp;Benefits:<ul><li>Mentoring/Coaching with Senior Employees/Leaders</li><li>Collaborative and supportive work environment</li><li>Opportunities to network across departments</li><li>Hands-on experience with real projects </li></ul> Please submit a Resume, Cover Letter, and Transcripts (Unofficial copies are acceptable at this stage.)&nbsp;Candidates must be legally authorized to work in USA without the need for sponsorship for employment visa status.&nbsp;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: <a href="https://www.ecfr.gov/current/title-10/chapter-III/part-810/appendix-Appendix%20A%20to%20Part%20810">eCFR :: Appendix A to Part 810, Title 10 -- Generally Authorized Destinations</a> 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:&nbsp;<a href="https://www.energy.gov/nnsa/10-cfr-part-810">https://www.energy.gov/nnsa/10-cfr-part-810</a>.&nbsp;Terrestrial Energy Inc. is an equal opportunity employer and does not discriminate on the basis of any legally protected status or group.&nbsp; We encourage applications from all qualified individuals.&nbsp;&nbsp;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 </div>

Reactor Physics Intern (Nuclear Engineering)

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About the Company

Terrestrial Energy

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