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Mechanical Engineer II

Job in Mercury, Nye County, Nevada, 89023, USA
Listing for: Nevada National Security Sites
Full Time position
Listed on 2026-02-16
Job specializations:
  • Engineering
    Systems Engineer, Electrical Engineering
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below
Location: Mercury

Overview

Job Description MSTS manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA). Our mission is to help ensure the security of the United States and its allies by providing high-hazard experimentation and incident response capabilities through operations, engineering, education, field, and integration services and by acting as environmental stewards to the Site’s Cold War legacy.

Our vision is to be the user site of choice for large-scale, high-hazard, national security experimentation, with premier facilities and capabilities below ground, on the ground, and in the air. Our 2,750+ professional, craft, and support employees are called upon to innovate, collaborate, and deliver on some of the more difficult nuclear security challenges facing the world today. NNSS.gov provides additional information.

  • MSTS offers our full-time employees highly competitive salaries and benefits packages including medical, dental, and vision; both a pension and a 401k; paid time off and 96 hours of paid holidays; relocation (if located more than 75 miles from work location); tuition assistance and reimbursement; and more.
  • MSTS is a limited liability company consisting of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and HII Nuclear Inc.
Responsibilities
  • Performs duties as a facility/system engineer (Mechanical Engineer II) at the Device Assembly Facility (DAF) within the MSTS Stockpile Experimentation & Operations Directorate. The DAF is located within the forward areas of the NNSS.
  • Maintain overall cognizance of assigned facility systems, provide systems engineering support for operations and maintenance, and provide technical support of line management safety responsibilities to ensure continued system operational readiness.
  • Validate physical configuration of assigned systems. Maintain and update system documents for Configuration Management (CM). Understand functions and performance criteria for assigned systems per the Safety Basis; act as the subject matter expert for assigned systems.
  • Conduct or oversee In-service-Inspection and Technical Surveillance Requirement execution of assigned systems.
  • Contribute to solutions of assignment-related problems and issues with a moderate scope and complexity, using established standards, practices, and procedures; evaluate standards and processes when needed.
  • Participate in developing field programs and designs using predetermined principles and practices.
  • Select and implement computer applications for their field.
  • Prepare or contribute to designs, strategies, reports, and technical proposals.
  • Perform design and technical analysis activities using prescribed codes and standards, computer software, and generally accepted best management practices.
  • Coordinate discipline information with other departments and with outside vendors.
  • Work with outside vendors as required, obtaining relevant information.
  • Develop a working knowledge of codes and standards of other disciplines.
  • Coordinate work within their discipline on moderately complex projects.
  • Often serve as a member of work teams.
  • Define specifications for procurements and initiate purchase requests.
  • Monitor work of skilled technicians and other support personnel.
Qualifications
  • Bachelor’s degree in an engineering program accredited by ABET for Civil, Mechanical, and Electrical engineering; or Calculus-based STEM bachelor’s degree in engineering; or for Architects, NCARB certification; or Professional Engineer license.
  • Plus at least 2 years’ relevant experience. Skill-building experience must demonstrate either deeper technical specialization or additional cross-disciplinary knowledge; graduate research experience may be recognized.
  • Ability to interpret codes and standards applicable to the position.
  • Demonstrated desire to learn and innovate; ability to follow instructions and procedures.
  • Knowledge of instrumentation & control, electrical, mechanical, or electromechanical components.
  • Self-motivated and able to complete assigned tasks with minimal supervision.
  • Strong time-management skills, organization, safe work habits, and broad range of…
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