2d ago
New
$107,625 - $122,063/yr

Engineer II-IV, Reactor Physics

United StatesUnited States·Rockvillemid
Other
0 views0 saves0 applied

Quick Summary

Overview

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities.

Technical Tools
Other

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.

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

Responsibilities

~2 min read
  • →Perform design, analysis, and evaluation in assigned projects using sound engineering principles and adhering to business standards, practices, procedures, and product / program requirements.
  • →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.
  • →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.

Requirements

~2 min read
  • Bachelor’s degree in nuclear engineering or related degree from an accredited institution.
  • Typically, three years of experience in an engineering role for a level II.
  • Typically, five years of experience in an engineering role for a level III.
  • Typically, ten years of experience in an engineering role for a level IV.
    • 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 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.

  • Experience with reactor physics codes (ex. MCNP, SCALE, OpenMC).
  • Understanding of deterministic methods.

What We Offer

~2 min read

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 on the specific office location and region referenced in the posting to take into consideration differences in cost of living and may not be reflective of all regions. Please note that compensation ranges listed for US job postings reflect base salary only and do not include benefits or other incentives.

 

Offers within the posted salary range are commensurate with the individual’s qualifications for the position, along with a view on internal equity, market data, and room for growth. The salary range for this position is:

Level II: $107,625 - $122,063; Level III: $125,000 - $150,000; Level IV: $155,000 - $185,000

X Energy, LLC offers a robust benefits package that includes a 401K plan with an employer match, Medical/Dental /Vision Insurance, Life and Disability Insurance, Paid Time Off, and a Tuition Reimbursement/Professional Development policy that supports the continuing education of our employees. 

An Equal Opportunity Employer.  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.   

X Energy, LLC participates in E-Verify. Please visit the links below for more information about E-Verify and the protection of your Right to Work. 

Right To Work Link:  If you have the right to work, don't let anyone take it away (e-verify.gov)

E-Verify Participation Link:  E-Verify Participation Poster English and Spanish  

Full time - Exempt

Location & Eligibility

Where is the job
Rockville, United States
On-site at the office
Who can apply
US

About this job

Pay per year
$107,625–$122,063 a year
69% above the $68,076 median for Other jobs on Jobera (138,142 salaries).
Who can apply
United States
Posted
2 days ago
Employer
has 148 open jobs on Jobera.

Listing Details

Posted
November 6, 2026
First seen
November 8, 2026
Last seen
November 8, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
63%
Scored at
November 8, 2026

Signal breakdown

freshnesssource trustcontent trustemployer trust
Newsletter

Stay ahead of the market

Get the latest job openings, salary trends, and hiring insights delivered to your inbox every week.

A
B
C
D
Join 12,000+ marketers

No spam. Unsubscribe at any time.

Engineer II-IV, Reactor Physics$107,625 - $122,063