Mission Support and Test Services, LLC (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. (See NNSS.gov for our unique capabilities.) 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.
- MSTS offers our regular, 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.
Due to the nature of our work, US Citizenship is required for all positions.
- Completion of first year Bachelor’s degree in an engineering program accredited by the Accreditation Board for Engineering and Technology (ABET), as of the date application is submitted
- or Completion of first year in a Calculus-based STEM bachelor’s degree in engineering, as of the date application is submitted.
- Must be actively enrolled in school, as of the date application is submitted.
- Must have and maintain a cumulative grade point average of 3.0 on a 4.0 scale, as of the date application is submitted.
- Must be located in the contiguous United States.
- Must have:
- Planning/organizing skills and initiative
- Good written and verbal communication skills
- Basic knowledge of engineering equipment, software, systems, calculations, and applications of engineering methods.
- Have self-motivating attitude and is open to exploring all areas of engineering.
- Ability to follow directions, both written and verbal, and able to work independently as well as part of a team
- Strong computer skills are desired, including MS Office and computer programming.
- A pre-placement drug screen, is required. MSTS maintains a substance abuse policy that includes random drug testing.
- Must have a valid driver's license.
Ability to obtain a HSPD-12 Personal Identity Verification credential under the Department of Energy Order 206.2, ‘Identity, Credential, and Access Management,’ and Supplemental Directive NNSA SD 206.2, ‘Implementation of Personal Identity Verification for Uncleared Contractors.’
MSTS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability, veteran status or other characteristics protected by law. MSTS is a background screening, drug-free workplace.
Hourly range for this position is $16.38 to $26.37.
Starting salary is determined based on the position market value, the individual candidate education and experience and internal equity.
THIS IS A CASUAL POSITION WORKING A MAXIMUM OF 900 HOURS PER CALENDAR YEAR.
Undergraduate Engineering Interns will work under the direct supervision of a manager & mentor and will be provided with hands-on participation in ongoing projects at one of the most unique experimental sites in the United States, or one of our outlying location sites.
Internships are available at the following locations:
- Mercury, Nevada (Area 23 - Base Camp - 65 miles north of Las Vegas)
- North Las Vegas, Nevada
We are looking for qualified and motivated Undergrad students that are pursuing a degree in:
- Electrical Engineering
- Nuclear Engineering
- Mechanical Engineering
- Chemical Engineering
- Civil Engineering
- Fire Protection Engineering
- Software Engineering
Duties and Responsibilities (may include and will vary depending on which department you are assigned to):
- Support research on systems.
- Perform document reviews and updates.
- Create Facility Change Requests to implement desired changes to various systems.
- Day-to-Day activities will center mostly on data collection. Type of data to be gathered will dependon the project/assignment.
- Redline drawings for mechanical systems for each building.
The intern will learn how engineering can influence the reliability, availability, and maintainability of 'assets' or equipment we maintain. This will include documentation and maintenance of asset information, data collection and data maintenance, and depending on time, analysis of asset data for FMEA/criticality analysis. The intern will also learn how different departments are needed to accomplish the goal of maximizing the reliability of assets.
Please note these important dates for our 2026 Summer Student Program:
- December 18th, 2025 - Last day for student internship applications to be accepted
- May 19th, 2026 - Summer internship Student Program begins
- August 7th, 2026 - Summer internship Student Program concludes
Mechanical Engineering (2)