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Internship Nuclear Design Jobs (NOW HIRING)

The Nuclear Company

AI Engineer 1

Washington, DC · On-site

$80K - $150K/yr

... nuclear reactors. Through its design-once, build-many approach and coalition building across ... Strong academic record; internships and co-ops valued. Benefits * Competitive compensation packages ...

The Nuclear Company

AI Engineer 1

Washington, DC

$80K - $150K/yr

... nuclear reactors. Through its design-once, build-many approach and coalition building across ... Strong academic record; internships and co-ops valued. Benefits * Competitive compensation packages ...

The Nuclear Company

AI Engineer 1

Washington, DC

$80K - $150K/yr

... nuclear reactors. Through its design-once, build-many approach and coalition building across ... Strong academic record; internships and co-ops valued. Benefits * Competitive compensation packages ...

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How much do internship nuclear design jobs pay per hour?

As of Jun 7, 2026, the average hourly pay for internship nuclear design in the United States is $16.33, according to ZipRecruiter salary data. Most workers in this role earn between $14.42 and $19.23 per hour, depending on experience, location, and employer.

What is the difference between Internship Nuclear Design vs Nuclear Engineer?

AspectInternship Nuclear DesignNuclear Engineer
Required CredentialsEnrolled in or recent graduate of nuclear engineering or related programBachelor's or master's degree in nuclear engineering or related field
Work EnvironmentInternship setting, often in research labs or design officesFull-time professional setting, including design, analysis, and operational support
Employer & Industry UsageUsed by nuclear power plants, research facilities, and engineering firms for trainingEmployed in nuclear power plants, consulting firms, and government agencies

Internship Nuclear Design provides hands-on training for students or recent graduates, focusing on learning design principles. Nuclear Engineers are full-time professionals responsible for designing, analyzing, and maintaining nuclear systems. Internships serve as a stepping stone to a career in nuclear engineering, which involves more responsibility and advanced tasks.

What kinds of projects or tasks can an intern expect to work on in a Nuclear Design internship?

As a Nuclear Design intern, you can expect to work on a variety of projects that support senior engineers in designing and analyzing nuclear systems. Typical tasks include assisting with computer simulations, preparing technical reports, and supporting safety assessments. Interns often collaborate with multidisciplinary teams to solve engineering challenges and may participate in meetings to discuss design modifications. This hands-on experience helps interns develop practical skills and gain insight into the workflow of nuclear engineering projects.

What are Internship Nuclear Design positions?

Internship Nuclear Design positions are entry-level roles for students or recent graduates interested in the field of nuclear engineering and design. These internships provide hands-on experience in designing nuclear systems, reactors, or components under the supervision of experienced engineers. Interns typically assist with technical analysis, computer modeling, safety reviews, and documentation related to nuclear projects. The aim is to develop practical skills and gain industry insight, often leading to future career opportunities in nuclear engineering.

What are the key skills and qualifications needed to thrive as an Internship Nuclear Design, and why are they important?

To thrive as an Internship Nuclear Design, you generally need a background in nuclear engineering or a related field, with strong analytical and problem-solving abilities. Familiarity with industry-standard simulation software (such as MCNP or SCALE), CAD tools, and a basic understanding of regulatory and safety systems is often required. Strong teamwork, attention to detail, and effective communication skills help interns contribute meaningfully and learn from experienced professionals. These skills and qualifications are crucial for ensuring safe, accurate nuclear design work and for developing the technical foundation needed in this highly regulated industry.
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What cities are hiring for Internship Nuclear Design jobs? Cities with the most Internship Nuclear Design job openings:
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Internship Nuclear Design jobs near you
Infographic showing various Internship Nuclear Design job openings in the United States as of May 2026, with employment types broken down into 93% Full Time, 4% Part Time, and 3% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution, with an average salary of $33,957 per year, or $16.3 per hour.

Mechanical Systems Design Engineer

X Energy LLC

Rockville, MD • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 18 days ago

Job description

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
Our Mechanical Systems Design Engineer 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.
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.
  • 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.
  • 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.
  • Create and maintain CAD-generated engineering models of reactor SSCs.
  • 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.
  • Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, without close supervision and extensive latitude for independent judgement.
  • Teach and mentor more junior team members.
  • Stay abreast of industry and academic trends, breakthroughs, and best practices.
  • Maintain professional demeanor and behavior at all times in all forms of communication.
  • Perform other duties as assigned by manager.

Qualifications
  • Bachelor's degree in mechanical engineering, or related engineering discipline (e.g., nuclear aerospace, chemical, etc.) from an accredited institution 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.
  • Proficiency with engineering hand calculations is required.
  • 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.

Preferred Skills
  • Experience with commercial nuclear power plant operations.
  • Experience using hand-tools and handling equipment to assemble mechanical systems or components.
  • Familiarization with metrology techniques for inspection of components, performing fit checks, and troubleshooting mechanical issues.
  • Familiarization with selection and use of instrumentation for testing and characterizing performance of mechanical systems and components.
  • Experience working in hazardous industrial or manufacturing environments with prior training in areas such as: Pressurized or Stored Energy, High/Low Voltage Safety, Lockout/Tagout, Hoist/Rigging Operations, Machining, Hazard Awareness, etc...
  • Professional experience in commercial nuclear power as well as design, qualification, licensing, and construction to ASME Boiler & Pressure Vessel Code (BPVC) Section III and/or Section VIII.
  • Experience with NRC regulations and licensing requirements for safety-related systems.
  • Experience with design using ASME BPV Code, ASME B31.1 or B31.3, and other industry standards.
  • Experience with mechanical design of heat exchangers, boilers, or steam generators.
  • Experience with Mechanical Process Equipment (Piping, Ducting, HVAC, Fire Suppression, Pumps, Pressure Vessels, Piping, Valves, Structural Supports) selection, sizing, and specification development.
  • Experience with design of control, gate, globe, ball, or check valves for high-pressure and high-temperature fluid or gas applications.
  • Experience with procurement and manufacturing oversight of pressure vessel or large metallic components.
  • Hands-on experience with graphite or other non-metallic components, fabrication or assembly sequencing, and/or tooling development preferred.
  • Experience designing and executing vibration, shock, and modal test programs to qualify mechanical components for high-reliability applications.

Job Level Qualifications:
  • Level III
    • Level Tasks/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.
    • Level 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.
  • Level IV
    • Level Tasks/Responsibilities
      • 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 judgement.
      • 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.
    • Level Minimum Qualifications
      • Typically, ten 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.
  • Level V
    • Level Tasks/Responsibilities
      • Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, without close supervision and extensive latitude for independent judgement.
      • Teach and mentor more junior team members.
      • Stay abreast of industry and academic trends, breakthroughs, and best practices.
    • Level Minimum Qualifications
      • Typically, fifteen 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: 530 Gaither Road, Rockville MD
Work Site Expectations: 4 days in office
Travel Expectations: up to 10% as needed
Hours: Standard office schedule are 8:00am-5:00pm ET, Mon-Fri
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:
Level III: $115,000 - $140,000 Level IV: $140,000 - $170,000 Level V: $170,000 - $200,000
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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