{"id":1289333,"url":"https://alion.io/job/terrestrial-energy-mechanical-engineer-or-analyst-model-development","title":"Mechanical Engineer or Analyst – Model Development","company":{"id":1848872,"name":"Terrestrial Energy","domain":"terrestrialenergy.com","url":"https://alion.io/company/terrestrialenergy","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","truth_index":{"grade":"C","score":63,"open_postings":13,"ghost_share":0.615,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-02T05:45:00Z"}},"role":"Analytics","role_family":"Analytics","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Bryan, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":76000,"max_usd":150000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":517},"experience_years_min":4,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Fortran","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-05-05T00:00:00Z","employer_posted_date":"2026-05-05","last_verified_at":"2026-10-02T11:40:57Z","board_verified":true,"closed_at":null,"days_open":151,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":150},"description":"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.\nThe 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.\nThe 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:\nHave US market experience and perspectives bringing good judgement and innovative approaches to problem solving and business plan execution.\nHave demonstrated exceptional performance in past engineering projects.\nOffer exceptional leadership and team building capabilities.\nHave a deep understanding of the requirements for advanced reactor development.\nCan assist in the creation of the discipline and organized company structure, and contribute to a culture of excellence, necessary for the development and deployment of the Company’s IMSR plant.\nCan thrive in a fast growing business environment, and are capable of flexibility and adaptability at a time of organizational change.\nHave the specific skillset and experience for the following role:\nThe Mechanical Engineer/Analyst - Model Development, under the direction the Mechanical Engineering Manager, is primarily responsible for contributing to the design and analysis of IMSR reactor systems, components and materials through the Detailed Engineering phase.\nIn particular, the role will include developing and implementing custom Engineering models for predicting the behavior and integrity of reactor materials, components, and systems throughout their operating life under IMSR reactor environmental conditions.\nOther responsibilities include:\nConducting literature and operating experience (OPEX) reviews to support design and model development\nCollaborating with the Research and Development (R&D) group to translate experimental results into custom Engineering models of components and materials under reactor conditions and to plan new experiments as needed\nPreparing models, calculations and reports for analysis of reactor components (such as graphite core components, core support structures, the reactor vessel, and other in-core components) including evaluating the effects of irradiation, fatigue, creep, dynamic and static mechanical and thermal loads, and other aspects as needed\nDeveloping computer codes for building custom analysis tools, automating input/output processing and customizing functionality of commercial software\nAttending and participating in conferences and industry events to stay familiar with and contribute to the development of current codes, standards, and industry best practices\nInterface with external experts and regulatory agencies\nCore Competencies\nMechanical and Material model development\nStrong knowledge of solid mechanics and material science fundamentals\nCommunication\nCritical Thinking\nDecision Making\nLeadership\nPlanning and Organizing\nProblem Solving\nResults Orientation\nTeam player with the ability to collaborate and interact with other groups\nFlexible and adaptable to change\nRequirements\nDegree or diploma in Mechanical Engineering, Materials Engineering, Nuclear Engineering, or alternate degree in a related field\nMinimum 4 years of work experience in mechanical and materials modelling and analysis (relevant graduate studies and academic research experience will be considered, and exceptions may be considered for particularly well-suited experience of shorter duration)\nStrong theoretical understanding of underlying mechanics of materials and material science fundamentals\nExperience with ANSYS Mechanical or other commercial FEA software (ANSYS Mechanical APDL is preferred)\nExperience with computer programming (Python, C, Fortran, C++, or other) for data pre/post processing or automation/customization of simulations in commercial software\nKnowledge of fatigue, creep, dynamic and static, linear and non-linear analyses\nWillingness to adapt and learn new approaches and areas of expertise\nStrong communication (both written and verbal) skills\nDemonstrated ability to work independently and with teams on problems that are challenging to solve and requiring innovative solutions\nAssets\nGraduate-level degree (Master’s or PhD) with an applicable specialization\nExperience with analysis of non-metallic materials (particularly graphite or similar materials)\nExperience with the implementation of user programmable features for custom constitutive models within a commercial FEA software (such as UserMat in ANSYS or UMAT in ABAQUS) \nWorking knowledge of the effects of radiation on materials of construction (graphite and alloy)\nKnowledge of nuclear and/or non-nuclear codes and standards including ASME Section III Division 1, Division 5, CSA N285.0 and ASME B31.1, CSA B51\nExperience with high temperature reactor applications and knowledge of ASME Section III Division 5 is strongly preferred\nExperience running large-scale models using HPCs\nLicensed Professional Engineer\nBenefits\nExtended Healthcare Plan \nA vacation policy designed to support your work-life balance\nEAP Programs available to you and your family\nWellness Subsidy \nAnnual Performance Review\nPaid Volunteer Days - A chance to give back!\nCareer development opportunities\nPlease submit a Resume and Cover Letter.\nCandidates must be legally authorized to work in the US without the need for sponsorship for employment visa status.\nTerrestrial Energy requires that the successful candidate be able toaccess 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: \n\nhttps://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.\nTerrestrial 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.\nIf 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 ","description_format":"text","description_chars":7439,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Energy & Utilities","Nuclear Energy"],"lifecycle":[{"event":"open","at":"2026-09-26T07:26:14Z"}],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.237,"p_room":0.28,"age_days":150,"expected_fill_days":41,"reasons":["conf:11","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-02T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/terrestrial-energy-mechanical-engineer-or-analyst-model-development","json_url":"https://alion.io/job/terrestrial-energy-mechanical-engineer-or-analyst-model-development.json","meta":{"generated_at":"2026-10-03T02:03:11Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2183,"day_limit":5000,"remaining_today":2817,"minute_limit":60,"resets_at":"2026-10-04T00:00:00Z"}}}