Administrative Assistant

Lothian, Maryland

ManTech
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ManTech seeks a motivated, career and customer-oriented Administrative Assistant to join our team in the Lexington Park, MD area. This is a full-time onsite position.

This role will support the Cost and Schedule Analysis Department in the Navy Aviation Division at ManTech.

Responsibilities include but are not limited to:
  • Booking travel and accommodations for employees and processing travel claims using the Defense Travel System (DTS)
  • Assisting with the coordination of events, meetings, and conferences
  • Managing and updating calendars, scheduling appointments, and coordinating meetings
  • Preparing and handling correspondence and documentation for the government client, including responding to emails and inquiries, taking meeting minutes, maintaining and organizing physical and digital files, and preparing presentations and reports
  • Entering and managing data, including database and spreadsheet input
  • Providing excellent customer service to all employees through proactive problem solving, adaptability, and strong interpersonal skills
  • Overseeing office management including office supplies, equipment, facilities, and visitors
Minimum Qualifications:
  • A High School Diploma or GED equivalent
  • 6+ years of relevant experience is required
  • Experience interfacing with senior level clients
  • Experience with the Microsoft Office Suite tools
Preferred Qualifications:
  • Experience using the Defense Travel System (DTS) to book travel and process travel claims
Clearance Requirements:
  • Must be a US Citizen
Physical Requirements:
  • The person in this position must be able to remain in a stationary position 50% of the time.
  • Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.
ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at and provide your name and contact information.

Date Posted: 01 June 2025
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