Test Engineer II/III, Mechanical
Listed on 2026-08-05
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Engineering
Systems Engineer, Test Engineer, Mechanical Engineer, Electrical Engineering
Job Title
This role is responsible for the planning, development, and execution of test activities for the advanced reactor technologies.
Job Profile Tasks/Responsibilities
- Help enact standard processes and best practices associated with technology maturation, test planning and execution.
- Work with system engineers to assess system risks, identify testing needs and requirements, develop test plans & specifications, and provide oversight of test activities.
- Support planning, design and development of test facilities, equipment and infrastructure.
- Engage with vendors to provide technical oversight of start-to-finish testing activities, from initial concept development through test execution.
- Provide general oversight of internal and external testing activities to verify the technical and programmatic completeness of testing performed.
- Provide in-person supervision of test setup, installation, commissioning and execution.
- 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, electrical, or nuclear engineering or related degree from an accredited institution.
- Level II:
Typically, two years of experience in a test engineering role. - Level III:
Typically, five years of experience in a test engineering role. - 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. - Hands on experience with hardware development, testing and experimentation.
- Demonstrated experience with design of experiment and test planning.
Preferred
Skills:
- Background in full technology development lifecycle; design, testing and integration. Experience in development of first-of-a-kind systems preferred.
- Broad background including hands-on mechanical, thermal, and materials testing.
- Experience in high-pressure and high temperature systems, preferably in pneumatic-type or gas-conveying systems.
- Experience or background in Systems Engineering.
- Travel to vendor sites on a regular basis may be required.
Location:
530 Gaither Road, Rockville, MD
Work Schedule:
4 Days a week in office
Hours:
8:00am-5:00pm, Mon-Fri
Travel Expectation: 10%
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 II: $76,089-$126,815 / Level III: $100,000-$144,000
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.
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