Senior Administrative Specialist
Listed on 2026-01-14
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Administrative/Clerical
Office Administrator/ Coordinator
Join to apply for the Senior Administrative Specialist role at Mission Support and Test Services, LLC
Base pay range$78,832.00/yr - $/yr
Job DescriptionMission 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 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.
- Assist the Deputy Director for Operations by planning and coordinating a variety of office management functions to support business and technical operations, processes, programs, and projects. Support other STL leaders as needed when other STL administrative team members are unavailable.
- Prepare and submit standard administrative documentation in support of the STL mission using a variety of applicable software. Manage and organize official records and correspondence as needed, and in accordance with company policies.
- Coordinate the administration of personnel policies including hiring, transferring, onboarding, reclassifying, performance evaluating, and terminating procedures applicable to STL personnel.
- Place orders for materials and supplies and maintain and reconcile records as a government purchasing card holder.
- Provide guidance and training to support personnel, students, interns, contractors and other personnel as required to complete assignments.
- Coordinate travel arrangements and expense activities/reimbursement for leadership and employees as needed.
- Provide planning and administrative support to site visits, meetings, and other special events taking place at STL.
- May perform business activities related to employee morale and recognition.
- Exchange information and work with peers, both within and outside of STL, and work with outside agencies, customers, sponsors, and suppliers as assigned.
- Contribute to and coordinate responses for a variety of tasks and reports. Perform tech editing duties as needed.
- Perform other duties assigned by Management.
- Contribute to recommendations for improving operations and processes, solving problems, and addressing issues for improving work group effectiveness. Participate in implementation of these improvements.
- Perform other duties assigned by Management.
- Bachelor's degree in related field or equivalent training and experience and at least 5 years of professional level experience, which provided a thorough working knowledge of administrative policies and procedures.
- Effective verbal and written communication skills. Must possess excellent interpersonal skills and ability to communicate with people inside and outside the organization, representing the organization to customers and suppliers, outside agencies and other external sources in a tactful, professional, and effective manner.
- Must be able to work effectively in a multidisciplinary engineering and science team environment.
- Proficiency in Microsoft Office programs (Word, Excel, PowerPoint, SharePoint, Outlook, and Access) and other applications including accounting, analytical, and financial…
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