Mechanical Engineering Intern

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 supporting professional employees working in an organizational function related to the Intern's area of study. Depending on the internship assignment, the intern may work alongside engineers, scientists, or industry professionals to contribute to various projects related to their area of study. Under guided supervision, interns will assist with various projects and tasks, contributing to the organization's goals while learning from experienced professionals in the field.

Job Profile Tasks/Responsibilities

- Assist with tasks or projects related to the area of study.

- Provide support for day-to-day departmental or team operations.

- Participate in brainstorming sessions, meetings, and project discussions offering input and feedback when appropriate.

- Attend team meetings and contribute ideas and suggestions to enhance operational efficiency or project outcomes.

- Help organize and maintain project files, documents, and records.

- Conduct research and gather information for ongoing initiatives and projects.

- Help prepare reports, presentations, or other materials as needed.

- Assist in providing heat transfer, fluid mechanics, and particulate mechanics analysis to support the design of various X-energy developed reactors and supporting subsystems.

- Assist with development, testing and verification of CFD models to support design and analysis which will form part of the reactor licensing basis (steady state and transient conditions, design basis events, anomalies, etc.).

Job Profile Minimum Qualifications

- Current student or recent graduate pursuing a degree in mechanical engineering, or related engineering discipline (e.g., nuclear aerospace, chemical, etc.) from an accredited institution required.

- Exposure to Computer-Aided Design (CAD) software.

- Proficiency in Microsoft Office Suite (Outlook, Word, Excel, PowerPoint).

- Current student or recent graduate pursuing a degree relevant to the discipline or functional area of the internship.

In addition to a resume, candidates must submit at least one letter of recommendation as part of the application process. Letters should be from a professor, academic advisor, employer, or professional mentor who can speak to the candidate’s qualifications.

Location:

530 Gaither Road, Rockville, MD

Work Site Expectations:

5 days in office

Program Dates:

Twelve (12) week program (May 18th to August 7th, 2026).

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 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.

A reasonable estimate for this position at the level of experience required is:

Salary Range for Job Posting $25.00/hr for Undergraduate Students/ $40.00/hr for Graduate Students

Position Job Classification

Part time - Non-Exempt