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Test Engineer III, Mechanical

Job in Rockville, Montgomery County, Maryland, 20849, USA
Listing for: Dormont Manufacturing Co
Full Time position
Listed on 2026-07-04
Job specializations:
  • Engineering
    Systems Engineer, Test Engineer, Mechanical Engineer, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 100000 - 144000 USD Yearly USD 100000.00 144000.00 YEAR
Job Description & How to Apply Below

Job Description

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

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.

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.
  • 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…

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