X

X-energy

Develops SMR reactors and TRISO fuel

Irradiated Materials Engineer 3-5

Design EngineeringConfirmed live in the last 24 hours
Full-timeGaithersburg, MD, USA

About the Job

Requirements

  • Typically, five years of experience in an engineering role is required for Level III.
  • A master's degree in engineering or a related field may be substituted for two years of experience.
  • A Ph.D. in engineering or a related field may be substituted for three years of experience.
  • Typically, ten years of experience in an engineering role is required for Level IV.
  • Typically, fifteen years of experience in an engineering role is required for Level V.
  • Previous experience at X-energy exceeding performance standards may be substituted for years of experience at Level V.

Responsibilities

  • Develop and implement methodologies to qualify and characterize materials, especially metallic alloys, graphite, composites, and welding materials, for nuclear reactor applications, including 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 the basis for material qualifications.
  • Use engineering tools, including simulation software, hand calculations, and engineering judgment, to assess microscale behavior, grain boundaries, surface effects, degradation behavior such as corrosion, oxidation kinetics, and neutron damage, and lifetime performance of materials.
  • Perform and assist metallurgical analysis for 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 generation of constitutive material models and perform and assist structural integrity, creep-fatigue, and strain evaluations for metals at high temperatures.
  • Support assessment of systems, structures, and components 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, and contribute to industry publications and professional forums.
  • Develop verification and validation 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.
  • Perform other duties as assigned by the manager.
  • For Level III, execute core tasks and responsibilities with minimal supervision and provide ownership, responsibility, and accountability over technical scope involving coordination of multiple individual contributors in a specific area.
  • For Level IV, lead execution of core tasks and responsibilities without close supervision and with some independent judgment, provide feedback and guidance to more junior team members, and lead small groups of engineers to solve complex technical problems and deliver high-quality engineering work products on time and within budget.
  • For Level V, lead execution of core tasks and responsibilities without close supervision and with extensive independent judgment, teach and mentor more junior team members, and stay abreast of industry and academic trends, breakthroughs, and best practices.

Desired Qualifications

  • Irradiation testing or post-irradiation examination experience is a strong plus.
  • Experience with creep and high-temperature mechanics.
  • Experience with metallic material qualification and behavior.
  • Work experience related to carburization and decarburization mechanisms.

About the Company

X-energy

Develops SMR reactors and TRISO fuel

X-energy designs and develops Generation IV high-temperature gas-cooled pebble-bed reactors and the TRISO-X fuel for small modular reactors (SMRs). Its modular reactor units use TRISO fuel to operate at high temperatures, producing heat that powers electricity generation or process heat through conventional power cycles, with safety features built into the fuel and design. The company differentiates itself by combining a fully modular Gen IV gas-coooled platform with proprietary TRISO-X fuel and a clear path toward commercialization backed by substantial financing. Its goal is to deliver cleaner, safer nuclear energy at commercial scale by completing design, obtaining regulatory clearance, and deploying its SMR technology and fuel.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Rockville, MD
Founded
2009

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