Administrative Skills, Analysis Skills, Calendar Management, Communication Skills, Customer Relations, Customer Support/Service, Data Analysis, Documentation Review, Government Intelligence, High School Diploma, Human Resources, Intelligence Agencies, Internet Security, Interpersonal Skills, Meeting Minutes, Microsoft Excel, Microsoft Office, Microsoft Outlook, Microsoft PowerPoint, Microsoft Word, National Reconnaissance Office (NRO), Office Equipment, On Site Support, Organizational Skills, People Management, Presentation/Verbal Skills, Records Management, Software Development, Team Lead/Manager, Telephone Skills, Time Management, Typing, Willing to Travel
General information
Requisition #
R68397
Locations
USA-VA-Chantilly
Posting Date
06/03/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time
Description & Requirements
Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!
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 tasks
- Schedule meetings and reserve conference rooms
- Attend 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 functions
- Provide coverage (as needed) across functional Administrative Team
- Domestic travel up to 25%
Minimum Qualifications:
- High School Diploma and 8+ years of experience, or Bachelor's Degree and 2+ years of experience
- Demonstrated proficiency in Microsoft Office tools (to include: Outlook, MSWord, Excel, PowerPoint, etc.)
- Possess excellent organization and time-management skills
- Possess 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 skills
- Experience working in fast-paced environments and working under quick timelines assisting multiple clients.
Preferred Qualifications:
- Demonstrate expert-level analytical and Critical Thinking Skills
- Have strong interpersonal, people, and listening skills
- Be responsive to tasking and able to work well independently and in groups
- Previous NRO experience is highly desired
- Experience with customer program eTrip
Clearance Requirement:
- Active/current TS/SCI with Polygraph is required
Physical 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, etc
- Frequently communicates with co-workers, management, and customers, which may involve delivering presentations
MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.
M
ManTech International Corp
Our Mission
Our mission is empowering our nation through a diverse and skilled workforce securely delivering innovative technology, consulting services and digital solutions for our customers’ mission success, every day.
Our Vision
Our vision is Securing the Future as the most trusted partner for U.S. Defense, Intelligence and Federal Civilian customers through the power of One ManTech. When these agencies think of an essential partner for their national and homeland security needs, they think ManTech.
Our Values
Our values are grounded in a bedrock of truth, integrity and caring for each other and the mission. We hold steadfast to:
• TRUST – We earn and protect the trust of our customers, employees and investors through an enduring foundation of respect, fairness, credibility and honoring our commitments, always.
• INCLUSION – We are an inclusive, diverse and talented workforce with a passion for mission success, intellectual capital, creativity and integrity. Our high ethical standards and investment in our people build confidence with our customers.
• QUALITY– We deliver exceptional quality to customers through differentiated technology solutions and an uncompromising focus on excellence, value and innovation.
5,000 to 9,999 employees
https://www.mantech.com/about