Seismic Vessel Jobs (NOW HIRING)

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 Reactor Vessel and Internal Structures Design Lead, under the direction of the Nuclear Facility Program Manager, is primarily responsible for owning the mechanical and structural design of the IMSR Reactor Vessel, reactor internals, and core support structures. Establish the design basis and directing the analyses that qualify the Systems, Structures, and Components (SSCs) in support of design certification and the NRC licensing basis. The role is the program's technical authority for these components and coordinates closely with Mechanical Engineering, Stress Analysis, Materials Science, Reactor Physics, and Thermal Hydraulics.

Responsibilities

• Own the mechanical and structural design of the IMSR4 Reactor Vessel and its pressure boundary and the Reactor Internal Structures (Internal Component and Core Supports, Internal metallic flow guides and partitions through design certification.
• Establish and maintain the design basis for these components: design loads, load combinations, service conditions, and acceptance criteria, documented in the design-basis and licensing record.
• Lead the structural classification and ASME code-of-construction approach for the vessel pressure boundary and core supports, including selection of the applicable Section III Division 5 rules for high-temperature service.
• Define the scope and acceptance criteria for the supporting structural, thermal, creep-fatigue, seismic, and flow-induced-vibration analyses, then direct and review that work performed by the Stress Analysis group rather than performing it directly.
• Set material-selection and qualification requirements for the high-temperature, salt-wetted metallic pressure boundary and internals, working with Materials Science on alloy behavior under irradiation and molten-salt corrosion.
• Manage the design interfaces between the reactor vessel and internals and adjacent scopes, the graphite moderator (non-metallic), the primary heat exchanger and primary pumps, core geometry and reactivity (Reactor Physics), fuel-salt flow and thermal conditions (Thermal Hydraulics), and external vessel supports and connected systems.
• Develop and maintain the component design documentation underpinning the NRC licensing basis, design specifications, design reports, and the supporting evidence for design-certification submittals.
• Serve as technical authority for the reactor vessel and internals in design reviews, NRC interactions, and supplier/fabricator technical exchanges, and guide less-senior engineers on design and analysis approach.

Core Competencies

• Expertise in nuclear component structural design and mechanical integrity, including design-by-analysis methods and ASME Boiler and Pressure Vessel Code Section III practice across pressure-boundary and core-support components.
• Knowledge of high-temperature design behavior: creep, creep-fatigue, thermal ratcheting, and elevated-temperature material response relevant to non-LWR (e.g., molten-salt) service.
• Ability to specify, direct, and critically review structural, seismic, thermal, and flow-induced-vibration analyses without performing them, setting requirements and judging the adequacy of others' work.
• Strong grasp of materials behavior in nuclear environments: irradiation effects, high-temperature corrosion in molten salt, and structural-alloy compatibility, sufficient to drive material selection alongside materials specialists.
• Skill in managing cross-discipline technical interfaces and translating reactor-physics, thermal-hydraulic, and licensing inputs into concrete design and acceptance criteria.
• Technical leadership and mentoring.
• Clear technical communication for design reviews, NRC-facing documentation, and supplier exchanges.

Requirements

• Bachelor's degree in Mechanical, Structural, Nuclear, or a closely related engineering discipline.
• Minimum 12 years of nuclear or other safety-related mechanical/structural design experience, including ownership of pressure-boundary or major-component design basis and documentation.
• Direct experience applying ASME Boiler and Pressure Vessel Code Section III to the design of nuclear pressure-retaining or core-support components.
• Experience producing design and analysis documentation to a regulatory/licensing standard of rigor.

Assets

• Professional Engineer (PE) licensure.
• Experience with ASME Section III Division 5 high-temperature design (Class A components, creep-fatigue and elevated-temperature rules) for reactor vessels or pressure-boundary components.
• Direct experience with high-temperature or large nuclear pressure-vessel design.
• Prior experience taking a reactor vessel or major component through a completed NRC design certification, construction permit, or advanced-reactor (10 CFR Part 53) submittal, including familiarity with the Licensing Modernization Project methodology (NEI 18-04 / Regulatory Guide 1.233).

Benefits

• Extended Healthcare Plan
• A vacation policy designed to support your work-life balance
• EAP Programs available to you and your family
• Wellness Subsidy
• Annual Performance Review
• Paid Volunteer Days - A chance to give back!
• Career development opportunities

Please submit a Resume andCover 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. 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 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