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Test Engineer, Test Design and Development

Job in Rockville, Montgomery County, Maryland, 20849, USA
Listing for: X-Energy, LLC
Full Time position
Listed on 2026-06-30
Job specializations:
  • Engineering
    Test Engineer, Mechanical Engineer, Systems Engineer, Quality Engineering
Salary/Wage Range or Industry Benchmark: 112275 - 187125 USD Yearly USD 112275.00 187125.00 YEAR
Job Description & How to Apply Below

Job Description

Job Description This role is responsible for the planning, development, and execution of test systems and related activities for the advanced reactor technologies. The role will coordinate with system design engineers to identify required testing, plan the necessary test program(s), support the entire test hardware lifecycle including design, development, procurement, fabrication, installation, testing, and decommissioning, and document and communicate results throughout the process.

The role may work in a general office space (onsite/remotely via technology) and/or in a designated facility laboratory area. While performing the duties of this job, the employee must be able to talk, hear, walk, and move consistently throughout the day. May be subject to high temperatures, noises, and vibrations from generating equipment. May be subject to the handling of and exposure to hazardous chemicals.

Must be able to push, pull, move, and/or lift a minimum of 25 pounds. May be required to work in cramped spaces.

Responsibilities
  • Design and develop test systems, equipment configurations, and test items in collaboration with engineering team members to mature prototype first‑of‑its‑kind X‑Energy technologies.
  • Collaborate with Safety, Health, and Environment (SHE) on hazard identification, safety planning, safety equipment procurement, and infrastructure requirements and training needs.
  • Lead test system design reviews and coordinate the preparation of Test Plans, Test Procedures, Test Data, and Test Reports.
  • Support in‑person test setup, installation, commissioning, and execution at X‑energy’s test facility.
  • Support standard processes and best practices associated with technology maturation, test planning and execution.
  • Maintain professional demeanor and behavior in all forms of communication.
  • Perform other duties as assigned by manager.
Qualifications
  • Minimum Qualifications Bachelor’s degree in mechanical, electrical, or nuclear engineering or related degree from an accredited institution.
  • Level II:
    Typically three years of experience in a test engineering role.
  • Level III:
    Typically five years of experience in a test engineering role.
  • Level IV:
    Typically, ten 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.
  • Proven ability to develop full test assembly design package, including conceptual design, PFD, P&, CAD, ICD, BOM, and fabrication drawings.
  • Broad background including mechanical, thermal, and materials testing.
  • Experience with data acquisition and instrument electronics and troubleshooting.
  • Familiarity with the ASME BPVC.
Location

530 Gaither Road, Rockville, MD

Work Schedule

4 Days a week in office

Hours:

8:00am-5:00pm, Mon-Fri

Compensation

Level II: $90,000- $115,000 / Level III: $93,600-$156,000 / Level IV: $112,275 - $187,125

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.
Equal Employment Opportunity

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.

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