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 a calculus-based science, technology, engineering, or mathematics (STEM) degree program at an accredited institution, as of the date application is submitted.
Must be actively enrolled in a graduate program in a calculus-based science, technology, engineering or mathematics (STEM) at an accredited institution, 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
- 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 $27.90 to 39.30.

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.

Graduate Science 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:

North Las Vegas, Nevada
Nevada National Security Site (65 miles northwest of Las Vegas, Nevada)
Los Alamos and Albuquerque, New Mexico
Livermore and Santa Barbara, California
Remote Sensing Laboratories at Nellis Air Force Base (Las Vegas, Nevada) or Andrews Air Force Base (Joint Base Andrews, Maryland)

We are looking for qualified and motivated Graduate students that are pursuing a degree in:

Mathematics
Physics
Chemistry
Health Physics
Geology/Geosciences

Duties and Responsibilities (may include and will vary depending on which department you are assigned to):

Build programming code/scripts to computationally process image and/or signal data, e.g. in Python, Matlab, or R. Knowledge of image/signal processing techniques is desired.
Create and give presentations on both project and progress to teammates and management.
Contribute wards professional reports and papers.
Potential for participating in hands-on data acquisition activities depending on project.
Participate on small teams of scientists, engineers, and technicians, to devise technical solutions and provide deliverables to customers.
Perform hands-on work on optical, mechanical, and/or electrical systems including data acquisition and system and/or subsystem fabrication.

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

Graduate Science Internship

Associate in Science, Levels V-XI

Nevada National Security

Compensation Overview