Business Assistant II

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 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.

The Nuclear Testing Archive (NTA) is in search of a Business Assistant II to conduct support duties at the Desert Research Institute.

Key Responsibilities

• Perform various administrative, clerical, and/or operations support duties and responsibilities associated with the Nuclear Testing Archives.
• Scan documents at the NTA in Las Vegas, NV.
• Index documents into the NTA Database.
• Assist with Freedom of Information Act (FOIA) and Privacy Act requests.
• Interface with outside agencies including planning and operations support as requested.
• Compose routine correspondence in response to requests for department services; answers inquiries from other departments, area offices, or outside entities.
• Review deliverables of assigned staff and monitors quality to ensure that all documents conform to established standards and procedures.
• Assist in cross-training other personnel in project/organizational unit techniques, and procedures.
• Perform other duties assigned by Management.

Due to the nature of our work, US Citizenship is required for all positions.

• High School diploma or equivalent, and at least one year of related experience.
• Able to use personal computer, printers, copiers, telephones, fax machines, calculators, and other general office equipment.
• Able to use Microsoft Excel and Window software.
• Experience working with the public.
• Able to follow oral and written instruction, and follow through on all assignments.
• Able to apply knowledge of a broad range of specialized functions and assist in coordinating activities with those of other work groups.
• Able to demonstrate creativity in how work is performed and in addressing the work processes.
• Able to deal with pressure of handling multiple tasks, complaints, frequent interruptions, and time constraints.
• Knowledge of basic math, grammar, spelling, and punctuation.
• The primary work location will be the Desert Research Institute (DRI) Facility in Las Vegas, Nevada
• The primary work hours are Mon/Thurs 4
  -10's (subject to change).
• Pre-placement physical examination, which includes a drug screen, is required. MSTS maintains a substance abuse policy that includes random drug testing.
• Must possess 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: $21.24 - $31.86.

Starting salary is determined based on the position market value, the individual candidate education and experience and internal equity.

• Job Identification 11337
• Job Category Administrative
• Posting Date 01/14/2026, 11:34 PM
• Job Schedule Full time
• Locations 755 E Flamingo Rd, Las Vegas, NV, 89119, US