Administrative Assistant (contingent 034)

Mssi Inc; Aberdeen (MD); On-site; USD 65,000 - 90,000; Full time

Job summary

Mssi Inc. located at APG, MD, is seeking an experienced Executive Assistant to support CPE IEW&S headquarters with day-to-day office functions and executive tasks.

The role requires a secret security clearance and prior experience supporting senior government leadership, handling travel, calendars, and correspondence with high attention to accuracy.

Qualifications

• Minimum 6 years of experience, with at least 2 years supporting a Flag Officer or SES as an Executive Assistant.
• Secret security clearance is required.

Responsibilities

• Record keeping and file maintenance.
• Directing visitors and answering inquiries.
• Coordinating meetings and executive level calendar scheduling and maintenance.
• Preparing and reviewing general correspondence for accuracy and completeness.
• Answering and directing incoming phone calls.
• Handling conference room scheduling requests.
• Assisting personnel in preparing travel authorizations in DTS.
• Inputting personnel time and attendance records into ATAAPS.
• Maintaining and filing personnel time and attendance records.
• Database and spreadsheet development/maintenance.
• Administrative data management, analysis, and research.
• Maintaining administrative access to MIRARS.
• Proficiency with government software packages (Word, Excel, Project, Outlook, PowerPoint).

Skills

Executive support

Calendar management

Travel arrangements

Record keeping

Communication

Education

Associates or better

Bachelors or better

Tools

Microsoft Word

Excel

Microsoft Project

Outlook

PowerPoint

Job description

Job Category: Operations

Requisition Number: ADMIN001847

• Posted : March 31, 2026
• Full-Time

Locations

Showing 1 location

Description

Location: APG, MD

Secret security clearance required

Requirements:

Perform administrative and executive level tasks for CPE IEW&S headquarters to ensure day-to-day office automation and daily administrative functions.

Receives and reviews read-aheads and other documentation for PEO and SES. Ensures all correspondence is in accordance with AR 25-50 prior to signature. Provides support for ceremonies, conferences, meetings, visits, and office calls. In addition, must maintain all records and security requests.

• Record keeping and file maintenance
• Directing visitors and answering inquiries
• Coordinating meetings and executive level calendar scheduling and maintenance
• Preparing and reviewing general correspondence for accuracy, regulation compliance and completeness
• Answering and directing incoming phone calls
• Handling conference room scheduling requests
• Assisting personnel in preparing travel authorizations in support of official temporary duty (TDY) utilizing the Defense Travel System (DTS)
• Inputting personnel time and attendance records into the Automated Time and Attendance and Production System (ATAAPS)
• Maintaining and filing personnel time and attendance records
• Database and spreadsheet development/maintenance
• Administrative data management, analysis, and research
• Maintaining administrative access to the Manpower Information Retrieval and Reporting System (MIRARS)
• The ability to work with government-provided software packages (i.e. Microsoft Word, Excel, Project, Outlook and PowerPoint)

Education/Experience:

• A minimum of 6 years, with at least 2 years’ experience supporting a Flag Officer or SES as an Executive Assistant
• Secret security clearance required

Qualifications

Education

Required

Associates or better.

Bachelors or better.

Experience

Required

SUB: Associates Degree w/ 10 years experience or 12 years experience

Bachelor's degree and a minimum of 6 years, with at least 2 years’ experience supporting a Flag Officer or SES as an Executive Assistant

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
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