Senior Admin Assistant - TS/SCI On-Site Leader Support

ManTech; Chantilly (VA); On-site; USD 55,000 - 70,000; Full time

Job summary

MANTECH seeks a motivated Senior Administrative Assistant to join our team in Chantilly, VA. The successful candidate will provide on-site administrative support to senior leaders and manage a range of administrative tasks with a focus on efficiency and accuracy.

Responsibilities include calendar management, travel arrangements, meeting coordination, and minutes. The role requires TS/SCI with Polygraph clearance, strong communication skills, and the ability to handle multiple priorities in a

Qualifications

• High School Diploma or equivalent with 8+ years of experience, or a Bachelor's Degree with 2+ years of experience.
• Proficient in Microsoft Office tools (Outlook, Word, Excel, PowerPoint).
• Excellent organization and time-management skills.
• Typing speed 50+ wpm.
• Ability to work independently with minimal guidance.
• Strong oral and written communication, organizational and team-building skills.
• Experience supporting multiple clients in fast-paced environments.

Responsibilities

• Provide administrative support to Senior Leaders (calendar management, travel, correspondence, and contact lists).
• Oversee administrative and clerical functions for the team, contracts, projects, or tasks.
• Schedule meetings and reserve conference rooms; attend and capture meeting minutes.

Skills

MS Office

Typing 50 wpm

Organization

Independent work

Communication

Time management

Education

High School Diploma

Bachelor’s Degree

Tools

MS Word

MS Excel

PowerPoint

Outlook

Job description

MANTECH seeks a motivated Senior Administrative Assistant to join our team in Chantilly, VA. The successful candidate will provide on-site administrative support to senior leaders and manage a range of administrative tasks with a focus on efficiency and accuracy.

Responsibilities include calendar management, travel arrangements, meeting coordination, and minutes. The role requires TS/SCI with Polygraph clearance, strong communication skills, and the ability to handle multiple priorities in a