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Job Title


Senior Administrative Assistant


Company : MANTECH


Location : Chantilly, VA


Created : 2026-05-05


Job Type : Full Time


Job Description

MANTECH seeks a motivated, career, and customer-oriented Senior Administrative Assistant to join our team in Chantilly, VA area. The successful candidate will provide on-site administrative support to senior leaders.Responsibilities include but are not limited to:Provide administrative support to Senior Leaders (to include: managing calendars, answering telephones, reviewing documents, making travel, responding to correspondence, and maintaining office staff phone contact lists)Oversee the administrative and clerical functions in support of the assigned team, contracts, projects, or tasksSchedule meetings and reserve conference roomsAttend and facilitate meetings, and capture meeting minutes (as directed)Perform other duties as assigned, such as Human Resources, Records Management, Facilities (to include escorting), and Security functionsProvide coverage (as needed) across functional Administrative TeamDomestic travel up to 25%Minimum Qualifications:High School Diploma and 8+ years of experience, or Bachelor’s Degree and 2+ years of experienceDemonstrated proficiency in Microsoft Office tools (to include: Outlook, MSWord, Excel, PowerPoint, etc.)Possess excellent organization and time-management skillsPossess strong Typing Skills (50+ wpm)Ability to work independently on tasks (with minimal guidance)Have exceptional oral and written communication, organizational skills, and team-building skillsExperience working in fast-paced environments and working under quick timelines assisting multiple clients.Preferred Qualifications: Demonstrate expert-level analytical and Critical Thinking SkillsHave strong interpersonal, people, and listening skillsBe responsive to tasking and able to work well independently and in groupsPrevious NRO experience is highly desiredExperience with customer program eTripClearance Requirement:Active/current TS/SCI with Polygraph is requiredPhysical Requirements:Must be able to remain in a stationary position 50%Needs to occasionally move about inside the office to access file cabinets, office machinery, etcFrequently communicates with co-workers, management, and customers, which may involve delivering presentations