Thermal Analysis Engineer

Thermal Analysis Engineer We are seeking an engineer to design and develop mechanical systems, structures, and components for nuclear products and facilities, ensuring they meet all technical specifications and requirements. Responsibilities Develop mechanical/physical concepts and support the design of structures, systems, and components for nuclear safety. Identify, collect, and document applicable requirements, interfaces, and design criteria, coordinating with stakeholders. Plan and perform analysis to assess SSCs for intended functions and technical specifications. Perform hand calculations and analytical tools for structural, thermal, hydraulic, and other scoping calculations. Support reactor and plant control philosophy implementation in plant models, simulations, and digital twins. Support sizing and analysis of components such as heat exchangers, pumps, circulators, and turbomachinery. Perform system‑level thermodynamic analyses and process design using simulation codes to support design iterations of X‑energy reactors. Assess SSCs for manufacturability, assembly, and integration considerations. Write and develop design documentation such as design basis documents, technical reports, calculations, and drawings. Develop Verification & Validation plans for analytical tools and support qualification of toolset. Perform work in accordance with quality procedures for design and configuration management. Provide independent reviews and acceptance reviews of engineering deliverables and data. Maintain professional communication at all times. Perform other duties as assigned by manager. Qualifications Bachelor’s degree in mechanical engineering or related discipline (e.g., nuclear, aerospace, chemical). Proficiency with engineering hand calculations. Experience with 1‑D flow solvers such as RELAP, Flownex, NPSS, SINDA/FLUINT, Flomaster or similar. Levels and experience requirements: Level I: 0 years of engineering experience. Level II: 2 years of engineering experience. Level III: 5 years of engineering experience. Location 530 Gaither Road, Rockville, MD Work Site Expectations 4 days in office. Travel Expectations Up to 10% as needed. Hours 8:00am – 5:00pm, Monday–Friday Compensation Level I: $75,000 – $100,000 Level II: $95,000 – $120,000 Level III: $115,000 – $140,000 Job Classification Full time – Exempt Benefits 401(k) plan with employer match Medical, Dental, Vision Insurance Life and Disability Insurance Paid Time Off Tuition Reimbursement / Professional Development Equal Opportunity Employer All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, or disability. X Energy, LLC participates in E‑Verify. #J-18808-Ljbffr X-Energy, LLC