Engineer III, Nuclear Packaging

X-Energy, LLC; Rockville (MD); On-site; USD 123,000 - 139,000; Full time

Benefits offered by this job

401K plan with an employer match

Medical/Dental /Vision Insurance

Life and Disability Insurance

Paid Time Off

Tuition Reimbursement/Professional Dev

Job summary

X Energy, LLC is seeking a Mechanical/Systems Engineer to design, analyze, and verify SSCs for nuclear products. The role emphasizes conceptual development, CAD modeling, and integration across engineering teams to meet safety and technical requirements.

Responsibilities include performing hand calculations, using CAD/PLM tools, and contributing to design documentation and verification plans while ensuring compliance with 10CFR and internal quality procedures.

Qualifications

• Bachelor’s degree in mechanical engineering or related discipline from an accredited institution.
• Proficiency with engineering hand calculations is required.
• Experience with CAD/PLM software and hardware development in production environments.

Responsibilities

• Develop mechanical concepts and design SSCs for nuclear products with focus on safety.
• Coordinate requirements, interfaces, and design criteria with stakeholders.
• Perform analyses to verify SSCs meet technical specs and design requirements.
• Create and maintain CAD models of reactor SSCs and supporting documentation.
• Produce design basis documents, technical reports, and drawings.

Skills

CAD/PLM proficiency

Hand calculations

Mechanical design

Systems analysis

Nuclear safety awareness

Education

Bachelor's degree in mechanical engineering

Tools

UG/NX

SolidWorks

Teamcenter/Windchill

Job description

Job Description

This role is responsible for the engineering design and development of mechanical systems, structures, and components. This includes concept development, evaluation of concepts, analysis of systems, structures, and components for their ability to perform their intended function, and ensuring they meet all technical specifications and requirements.

The role will ensure the development of the systems and components through production including any necessary prototyping, testing, and commissioning.

Job Responsibilities

• Develop mechanical/physical concepts, design and support development of processes to create or identify structures, systems, and components (SSCs) for use in nuclear products or facilities with a focus on nuclear safety.
• Identify, collect, and document applicable requirements, interfaces, design basis and criteria by coordinating with key stakeholders/systems engineers and support identifying applicable industry codes and standards and the direction of project leads and systems engineers.
• Planning and performing the analysis required to assess aspects of the SSCs to ensure they can perform their intended functions and meet technical specifications and design requirements.
• Perform computations utilizing hand calculations and analytical tools for structural, thermal, hydraulic, and other scoping calculations as required at the direction of project leads and systems engineers to ensure SSCs can meet technical requirements.
• The role may include specialization in one or more of the following areas Create and maintain CAD-generated engineering models of reactor SSCs.
• Integrate design activities across engineering team members, partners, and suppliers and perform supporting scoping and sizing calculations to downselect design features to meet design requirements using guidance from consensus codes and standards.
• Develop innovative mechanical solutions to refine and deploy concepts, technologies, and designs associated with X-energy developed reactors, including pressure vessels and piping, reactor internals, nuclear fuel, and high temperature materials such as graphite.
• Support the assessment of SSCs for manufacturability as well as assembly and integration considerations at the direction of project leads.
• Write and develop design documentation including design basis documents, technical reports, calculations, and drawings in accordance with applicable procedures.
• Develop Verification and Validation (V&V) plans for analytical tools and support qualification of toolset.
• 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.
• Maintain professional demeanor and behavior at all times in all forms of communication.
• Perform other duties as assigned by manager.

Minimum Qualifications

• Bachelor’s degree in mechanical engineering, or related engineering discipline (e.g., nuclear aerospace, chemical, etc.) from an accredited institution required.
• Proficiency with engineering hand calculations is required.
• Experience and/or knowledge in a minimum of one of the following areas: Use of Computer-Aided Design (CAD) and product lifecycle management (PLM) software.
• Hardware ownership including manufacturing and testing oversight.
• One plus years of demonstrated hands‑on experience developing and delivering hardware or manufacturing processes in a production environment is required. May include industry internship experience, hobby, or participation in collegiate engineering projects such as: Formula SAE, Baja SAE, Design Build Fly, Rocket Club, etc. Designing and developing mechanical or fluid systems, assemblies, or components. E.g. UG/NX, SolidWorks, Pro-Engineer, Teamcenter, Windchill, or similar.

Preferred Skills

• Experience with leading and executing design/fabrication/testing/licensing of TypeA or TypeB fissile radioactive material transport package as required by 10CFR Part71 and 10CFR Part49 requirements.
• Experience with design/fabrication/licensing of nuclear storage systems under 10CFR Part72 or 10CFR Part50 is also preferred.
• Facilitate/review structural, thermal, containment/confinement, shielding and criticality evaluations for nuclear transportation and/or storage systems.
• Experience interacting with the regulatory authority during pre‑application meetings, and providing technical documentation in the from of responses to requests for additional information (RAIs).
• Experience interacting with varied stakeholders internally within the company with technical authority.

Responsibilities

Execute the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, with minimal supervision. Provide ownership, responsibility, and accountability over technical scope involving the coordination of multiple individual contributors working in a specific area.

Minimum Qualifications

Typically, five years of experience in an engineering role required. 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.

Location

9801 Washingtonian Blvd, Gaithersburg, MD

Work Site Expectations

4 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. 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: $122,500 -$138,750

Position Job Classification

Full time - Exempt

Benefits

• 401K plan with an employer match
• Medical/Dental /Vision Insurance
• Life and Disability Insurance
• Paid Time Off
• 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

X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.

We believe in leaving a cleaner planet for our children and grandchildren, while continuing to provide sufficient and affordable power to sustain growing populations around the world. That is why we have reinvented nuclear power, with a unique combination of proven technologies and new innovations, to meet our current and future needs. Watch our Anthem here

Equal Employment Opportunity Posters

X-energy does not discriminate in employment against qualified individuals on the basis of a disability, and understands its obligation to make reasonable accommodation for individuals with physical or mental impairments that qualify as a disability under the ADA and ADAAA, unless the accommodation would impose an undue hardship on the company. It is an applicant’s or employee’s responsibility to participate in this interactive process by seeking an accommodation, assisting X-energy in reviewing accommodation alternatives and providing medical certification of the need for an accommodation. Any applicant or employee who wishes to seek an accommodation under this policy should contact the Human Resources Department via email at [e-mail]. Whether a requested accommodation would create an undue hardship will be determined based on the facts of each particular case.