Administrative Specialist II - Safeguards and Security (S&S) Programs

Mission Support and Test Services · Mercury

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We are seeking a proactive and detail-oriented Administrative Specialist II to provide mission-critical support to the Safeguards and Security (S&S) Programs Directorate. In this dynamic role, you will streamline administrative operations, enhance program efficiency, and serve as a vital operational bridge across key facilities supporting national security missions.

Due to the collaborative and hands-on nature of the diverse S&S programs, this role features a hybrid multi-site operational schedule, 2 days/week: Nevada National Security Site (Mercury, NV) and 2 days/week: North Las Vegas Facility (NLVF) (Las Vegas, NV).

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-purpose, multi-mission, high-hazard experimentation facilities delivering technical and service solutions in partnership with the National Laboratories. Our collaborative work supports the government’s most important national security missions. (See NNSS.gov for our unique capabilities.) Our 3,000+ 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 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 Aerospace, Amentum, and HII Nuclear Inc.

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