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Radiation Shield Design Engineer

Job in Gaithersburg, Montgomery County, Maryland, 20883, USA
Listing for: X-energy
Full Time position
Listed on 2026-08-27
Job specializations:
  • Engineering
    Mechanical Engineer, Electrical Engineering, Environmental Engineer, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 158000 - 183000 USD Yearly USD 158000.00 183000.00 YEAR
Job Description & How to Apply Below

Job Description

This role is responsible for performing radiation shielding tasks associated with designing, modeling, and conducting analyses of a nuclear reactor or nuclear facility.

Job Profile Tasks/Responsibilities
  • Perform design, analysis, and evaluation in assigned projects using sound engineering principles and adhering to business standards, practices, procedures, and product / program requirements.
  • Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, without close supervision and some latitude for independent judgment.
  • Provide feedback and guidance to more junior team members with the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document.
  • Lead small groups of engineers to solve complex technical problems and deliver high quality engineering work products on time and within budget.
  • Collaborate in planning, scheduling, and organizing detailed phases of engineering work.
  • Collaborate in the technical oversight and direction of internal or external design teams.
  • Facilitate and assist in the assessment of customer needs and capture requirements and functions related to nuclear engineering.
  • Execute nuclear engineering assignments with clear and specified objectives; utilize conventional specifications and/or Interface Control Documents and plans.
  • Recommend system design alterations and enhancements to improve quality of products and/or procedures from an assembly, transportation, construction, commissioning, operations, maintenance, and/or decommissioning perspective.
  • Lead reviews and presentations for internal company design reviews and customer design reviews regarding nuclear design.
  • Organize engineering efforts in assigned areas between specialty and other engineering groups or disciplines, with the client, suppliers, contractors, or other groups as required.
  • Maintain a 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 nuclear engineering or related degree from an accredited institution.
  • Typically, ten years of experience in an engineering role.
  • 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.
  • Possess technical experience and proven expertise in one or more of the following areas:
  • Reactor core design and analysis.
  • Radiation shielding design and analysis.
  • Nuclear fuel analysis and qualification.
  • Criticality safety.
  • Reactor multiphysics analysis, especially pertaining to transient analysis.
  • Nuclear materials and chemistry.
  • Nuclear analysis software development, verification and validation.
  • Other areas of nuclear engineering or nuclear physics relevant to the design and analysis of small modular reactors, microreactors, and nuclear facilities.

Location: 9801 Washingtonian Blvd, Gaithersburg, MD

Work Site Expectations: 4 days in office, 1 day remote

Travel Expectations: 10% (as needed for project assignment)

Hours: Standard office hours are 8:00am ET to 5:00pm ET, Monday
-Friday

Compensation

As required by Maryland and other applicable state law, X Energy, LLC (X-energy) lists the expected compensation range for a publicly advertised job opportunity based upon the job requirements (e.g. education/training, experience, skill sets, etc.). Individual candidates who meet the job requirements for the posted position will be offered a salary within this range based on their respective levels of education/training, experience, and other qualifications unique to them.

Salary ranges may vary based…

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