Jobs and Careers
X-

Graphite Materials Engineer II-IV

X-energy
United Statesfull_timeVerifiedPosted 19 Aug 2025
💰 $187,250/yr($90,090/yr$187,250/yr)

About the role

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at www.x-energy.com/contact-us.

Job Description

This role is responsible for performing engineering tasks associated with selecting, qualifying, and conducting lifetime assessment analyses for materials in a nuclear reactor or nuclear facility.


 

Job Profile Tasks/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.
  • The role includes specialization in the following area
    • Graphite
      • Perform and assist material degradation analysis for graphite and composite components of X-energy developed reactors, including graphite core assemblies, and assessment of as-manufactured, irradiated, and oxidized data.
      • Collect and use data to support the generation of constitutive material models / analytical tools and perform and assist structural integrity, cracking, dimensional change, and stress/deformation evaluations for irradiated graphite.
  • 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.

Job Profile Minimum Qualifications:

  • Bachelor’s degree in materials engineering, or related engineering discipline (e.g., chemical, nuclear, mechanical etc.) from an accredited institution.
  • Experience and/or knowledge in Graphite
  • Experience with nonmetallic materials behavior (e.g. ceramic / composite / graphite / brittle materials)

Job Level Qualifications:

  • Level II
    • Level Tasks/Responsibilities
      • Support team members with the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, under guided supervision.
      • Coordinate with engineering team members, partners, and suppliers to facilitate the convergence of efforts, allow design closure, provide design assurance, and deliver high quality engineering work products.
    • Level Minimum Qualifications
      • Typically, three 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 rela

Apply for this role

Generate a tailored application kit with a matched cover letter, interview prep, and CV highlights — in under 60 seconds.

Apply Now →Generate Application Kit

Free account required — sign up in 30s

Company

X-energy

View company profile →