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Engineer II, Plant & Process

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Engineer II, Plant & Process

X-energy

Engineer II, Plant & Process

2 months ago

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Important information


Contract type:

Permanent

Location:

Rockville, MD, USA

Work mode:

Onsite

Published on:

31 August 2026

What they need


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 completing the design of, and assisting with analysis of, structures, systems, and components for various advanced reactors, including High Temperature Gas-cooled Reactors (HTGRs), Microreactors, Lunar Fission Surface Power (FSP) reactors, and other terrestrial and space reactor concepts. The position requires interaction with other disciplines such as nuclear reactor dynamics, radiation shielding, thermal-hydraulics, structural mechanics, materials, system analysis, instrumentation and control, and other general engineering disciplines to understand the interfaces, dependencies, and influence of those subsystems on the mechanical behaviors and modular design.

Job Profile Tasks/Responsibilities

  • Develop mechanical/physical concepts, designs, and processes to create structures, systems and components (SSCs) for transportable nuclear power plants for terrestrial and space applications. Examples include: reactor core structures, pressure vessels, control drive assemblies, core reflectors, heat rejection systems, heat exchangers, transportation packages.
  • Create and maintain CAD-generated engineering models of reactor SCCs.
  • Support hardware development and prototype manufacturing and testing efforts as a cognizant engineer.
  • Develop analysis plans for assessing structural components.
  • Perform analysis utilizing hand calculations and support, or perform, Finite Element Analysis (FEA) to evaluate structural components.
  • Assess SSCs for manufacturability as well as assembly and integration considerations.
  • Coordinate and iterate design efforts with fluid dynamics, seismic/structural dynamics, electrical, neutronic, manufacturing, and other systems to understand impacts and ensure compatibility with each.
  • Perform work in accordance with X-energy Configuration Management Plan (CMP), Design Control Procedure, and maintain system and model compatibility in X-energy’s Teamcenter Product Lifecycle Management (PLM) system.
  • 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 mechanical engineering or related engineering discipline.
  • Typically, three plus years of experience in an engineering role required (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience).
  • Knowledge of designing complex components or systems.
  • Knowledge of fundamentals of mechanical design for structural and fluidic components, mechanisms, or manufacturing & processing equipment.
  • Experience with engineering hand calculations is required.

Preferred Skills

  • Experience developing and/or working with system purification technologies (e.g., reverse osmosis, capacitive deionization, etc.) is a plus.

Location: 9801 Washingtonian Blvd, Gaithersburg, MD

Work Site Expectations: 5 days in office

Travel Expectations: Up to 10%

Hours: Standard office hours are 8:00am - 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 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.

Qualifications 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:

$105,000- $117,500

Position Job Classification Full time - Exempt

Benefits 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

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