STL Undergraduate Engineering Internship (Associate in Engineering - Levels I - IV): Details

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.

THIS IS A CASUAL POSITION WORKING A MAXIMUM OF 900 HOURS PER CALENDAR YEAR.

Our Special Technologies Laboratory (STL) in Santa Barbara, CA is looking to hire an undergraduate engineering intern for our 2026 summer internship program. The selected student will work under the direct supervision of a manager & mentor within a variety of areas and will be provided with hands-on participation in ongoing projects at one of the most unique experimental sites in the United States. 

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):

• Compile and input data in a Microsoft Teams-based environment, utilizing MS Word documents and MS Excel Spreadsheets.
• Develop processes and associated documentation or user assistance tools; examples: Flowcharts, Schematics, lexicons, Standard Operation Procedures or User Guides.
• Participate in special research or other projects, as assigned.
• Engage with senior subject matter experts.
• Prepare and deliver in-person or virtual oral and written reports, utilizing Teams and Power Point.

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.
• June 15, 2026 - Summer internship Student Program begins.
• September 5, 2026 - Summer internship Student Program concludes.

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