Administrative Assistant

About the role

Amentum is seeking an Administrative Assistant to support a unique U.S. Navy program on the island of Diego Garcia. The role provides essential clerical and administrative support to ensure smooth department operations, handling communications, travel coordination, and onboarding activities.

Key responsibilities

• Screen and direct telephone calls, visitors, and incoming correspondence in a professional manner.
• Perform routine administrative tasks such as typing, filing, faxing, scanning, mailing, and distributing documents.
• Confirm, code, and distribute invoices for payment processing.
• Process employee timesheets, expense reports, and verify charge codes.
• Coordinate domestic and international travel arrangements for staff.
• Review outgoing correspondence for accuracy and compliance.
• Order, receive, and maintain office and departmental supplies.
• Process new‑hire paperwork, prepare employment packets, and generate offer letters.
• Maintain organized electronic and hard‑copy filing systems.
• Perform other duties consistent with the position as assigned.

Required profile

• High school diploma or equivalent.
• Minimum of two years of clerical or administrative assistant experience.
• Proficiency with Microsoft Office applications, especially Word and Excel.
• Typing speed of 50‑60 words per minute.
• Ability to operate standard office equipment.
• Valid passport with at least one year remaining validity and ability to obtain required visas.
• Pass contract medical requirements and maintain compliance throughout deployment.
• Ability to read, speak, and comprehend English for contract duties and emergency procedures.

Required skills

• Microsoft Word
• Microsoft Excel