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

X-energy, LLC is seeking an accomplished Technical Fellow, Materials Engineering to provide senior technical leadership and strategic direction for materials engineering capabilities. This senior technical leadership position drives innovation and excellence in qualifying graphite, metallic alloys, composites, and welding materials for the Xe-100 Small Modular Reactor (SMR), with particular emphasis on mission-critical reactor systems operating in high temperature environments.
The technical fellow will provide strategic direction and technical mentorship to specialized engineering teams performing advanced materials lifetime degradation assessment and performance demonstration activities. This role implements leading edge metallurgy and tribology principles to select and apply technical codes and standards and develop methodologies that advance reactor technology while enabling cost-effective construction approaches. Responsibilities include driving innovation in materials qualification methodologies, regulatory engagement, providing technical oversight across multi-disciplinary project teams, and developing the technical framework for next-generation advanced reactor materials deployments optimized for high temperature nuclear environments.
This role is responsible for serving as a subject matter expert (SME) and provides strategic guidance and deep technical expertise to ensure the optimal design, integration, and performance of complex systems. The Technical Fellow will leverage their extensive knowledge of materials engineering principles, nuclear reactor high temperature material behavior, and practices to optimize systems, processes, and the engineering organization. This role requires a blend of technical expertise and problem-solving capabilities to ensure that all system components—people, technology, materials, information, and energy—work together seamlessly to meet project and organizational goals. The Technical Fellow will collaborate with cross-functional teams to enhance engineering and material qualification practices, influence product and system architectures, and contribute to the continuous improvement of systems integration, performance, and efficiency.

JOB PROFILE MINIMUM QUALIFICATIONS

• Bachelor’s degree in materials engineering or related discipline from an accredited university or college.
• Typically, seventeen years of total work experience with a minimum of ten years of experience directly related to the designated discipline.
• Must have a minimum of two of the following criteria:
• Authorship or co-authorship of peer-reviewed papers or technical publications.
• Proven track record of innovative problem-solving and contributions to significant projects within the organization.
• Recognition by industry peers through awards or commendations.
• Involvement in professional associations.
• Speaking at professional conferences.Ph.D. in the specific discipline can substitute for authorship of peer-reviewed or technical publications.

PREFERRED QUALIFICATIONS

• Experience in qualifying and characterizing materials, especially metallic alloys, graphite, composites, and welding materials for nuclear reactor applications in high temperature environments
• Demonstrated expertise in materials lifetime environmental degradation assessment methodologies, including fatigue, creep, corrosion, oxidation, and irradiation effects evaluation for nuclear components
• Proven track record in materials performance demonstration through experimental testing, validation programs, and qualification campaigns for reactor-grade materials
• Deep knowledge of metallurgy principles and materials science fundamentals, with specific experience in high-temperature alloy behavior and microstructural evolution
• Strong background in tribology and materials interaction analysis, including wear, friction, and contact mechanics evaluation for reactor mechanical components
• Experience developing regulatory strategies for implementing materials qualification methodologies that address nuclear regulatory requirements
• Strong familiarity with application of industry codes and standards (in particular, ASME Boiler & Pressure Vessel Code, Section III, Division 5, and Section VIII, Division 1 and 2)Demonstrated knowledge in leveraging computational materials science methods and simulating materials performance.

• Act as a SME within the organization, providing direction and vision for analysis initiatives. Lead efforts to define and implement high temperature metallic and nonmetallic material qualification architectures that meet current and future business needs.
• Provide coaching and mentorship to engineering teams, managers, and other key stakeholders. Advocate for best practices and guide technical decision-making.
• Lead efforts to optimize system designs, analyses, processes, and components across multiple disciplines to enhance performance, reliability, and efficiency. Ensure all subsystems are fully integrated, ensuring seamless operation across complex environments.
• Drive innovation by exploring and implementing advanced technologies, tools, and methodologies in qualifying graphite, metallic alloys, composites, and welds materials for high temperature environments. Identify areas for improvement within engineering workflows and systems processes and implement improvements to increase operational excellence.
• Work closely with product managers, engineers, designers, and other stakeholders to translate high-level business and technical requirements into robust, scalable systems. Collaborate across departments to ensure alignment of technical goals with overall company objectives.
• Take a holistic approach to problem-solving, addressing both technical and non-technical challenges. Identify, assess, and mitigate risks related to system design, performance, and integration.
• Develop and enforce technical standards and best practices in materials engineering and lifetime environmental degradation assessment. Ensure compliance with industry regulations, standards, and internal policies.
• Represent the organization at industry conferences, technical forums, and seminars. Publish white papers, case studies, or technical articles to share knowledge, influence industry trends, and enhance the organization’s reputation as a thought leader in qualifying high temperature materials for advanced reactors.
• Contribute to the continuous development of the engineering organization’s capabilities by improving methodologies, tools, and processes. Foster a culture of collaboration, continuous learning, and technical excellence.
• Define key performance indicators (KPIs) and metrics to assess the success of materials engineering initiatives. Monitor performance and provide regular updates to senior leadership on progress, challenges, and opportunities.
• Maintain professional demeanor and behavior at all times in all forms of communication.
• Perform other duties as assigned by manager.