Administrative Support Specialist

Responsibilities

• Prepare and maintain customer correspondence, reports, briefings, and administrative records.
• Utilize SharePoint to manage travel approval requests, weekly activity reports, and organization rosters.
• Manage the customer SharePoint portal, including site collections and subsite operational support.
• Plan and schedule facility meetings, appointments, and management reviews for senior leaders.
• Oversee the onboarding process for government personnel and contractors, including IT account and CAC facilitation.
• Manage office supply inventory, research pricing, and coordinate with purchase authorities.
• Perform facility security escort duties, including visitor screening and badge process oversight.
• Assist with the development of security guidelines, administrative processes, and standard operating procedures (SOP).

Requirements

• Active Top Secret clearance with SCI eligibility (US Citizenship required).
• 2+ years of documented administrative and general accounting experience.
• Proven experience handling classified material in a secure facility.
• Advanced proficiency in Microsoft 365 (Word, Excel, PowerPoint, Outlook).
• SharePoint Power User skills, including content management, workflows, and design.
• Strong organizational, interpersonal, and written/verbal communication skills.

Preferred Qualifications

• 4 or more years of related administrative experience.
• Previous experience working in or with the military.
• College degree or professional certification in a related field.

Benefits

• Health, dental, and vision insurance.
• Paid time off and holidays.
• Retirement benefits including 401(k) matching.
• Educational reimbursement and parental leave.
• Employee stock purchase plan.
• Disability and life insurance.

About the Company

Amentum delivers agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees across seven continents, we tackle the world’s toughest challenges through a broad range of operational support services.