X-energy · 2 months ago
Materials Engineer (Creep & High Temp Metallics Design)
Rockville, MD
Full-time
Onsite
Mid, Senior Level
$98K/yr - $163K/yr
5+ years expX-energy is a company focused on engineering design and development of mechanical systems for nuclear reactor applications. The Materials Engineer is responsible for the design and analysis of materials, ensuring they meet technical specifications and perform effectively in high-temperature environments.
Clean EnergyCleanTechEnergyNuclearRenewable Energy
Responsibilities
Develop and implement methodologies to qualify and characterize materials, especially metallic alloys, graphite, composites, and welding materials for nuclear reactor applications including in high temperature environments
Support selection of appropriate materials, test methods, codes and standards, and prepare material specifications for component procurement
Inform development of and assist in oversight of materials testing programs to collect material properties and establish basis for material qualifications
Use engineering tools, including appropriate simulation software, hand calculations, and engineering judgment, assess microscale behavior, grain boundaries, surface effects, degradation behavior (corrosion, oxidation kinetics, neutron damage, etc.), and lifetime performance of materials
Perform and assist metallurgical analysis for the alloys selected for metallic systems, structures, and components of X-energy developed reactors, including pressure vessels and piping, reactor internals, heat exchangers, and other systems and components
Collect and use data to support the generation of constitutive material models and perform and assist structural integrity, creep-fatigue, and strain evaluations for metals at high temperatures
Support the assessment of SSCs for response to environmental conditions at the direction of project leads
Consider effects of tribology and material property evolution on system and component design as a function of temperature and environment
Write and develop design and analysis documentation including design basis documents, technical reports, calculations, and drawings in accordance with applicable procedures, as well as industry publications and engagement in professional forums
Develop Verification and Validation (V&V) plans for analytical tools and support qualification of toolsets
Perform work in accordance with X-energy quality procedures for design and configuration management to ensure project quality requirements are met
Provide independent reviews and acceptance reviews of engineering deliverables and data
Maintain professional demeanor and behavior at all times in all forms of communication
Perform other duties as assigned by manager
Qualification
Required
Bachelor's degree in materials engineering, or related engineering discipline (e.g., chemical, nuclear, mechanical etc.) from an accredited institution
Typically, five years of experience in an engineering role required
A master's degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience
A Ph.D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience
Previous experience at X-energy exceeding performance standards may be in lieu of years of experience
Experience with metallurgical analysis and strong familiarity with metallic alloy material behavior
Benefits
401K plan with an employer match
Medical/Dental /Vision Insurance
Life and Disability Insurance
Paid Time Off
Tuition Reimbursement/Professional Development policy that supports the continuing education of our employees
Company
X-energy
X-energy is a nuclear energy company that develops small modular nuclear reactors and nuclear fuels for clean energy generation.
501-1000 employees
H1B Sponsorship
X-energy has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (1)
2022 (2)
2020 (1)
Funding
Current Stage
Late StageTotal Funding
$1.71BKey Investors
Jane Street CapitalPittco ManagementDepartment for Energy Security & Net Zero
2025-11-24Series D· $700M
2025-03-05Private Equity· $22.8M
2024-10-16Series C· $700M
Leadership Team
J. Clay Sell
Chief Executive Officer
Robert Taylor
Vice President, Regulatory Affairs and Licensing
Recent News
2026-01-16
MIT Technology Review
2026-01-13
Company data provided by crunchbase