Senior Administrative Assistant - Security & Operations Support

RDR, Inc.; Chantilly (VA); On-site; USD 75,000 - 120,000; Full time

Job summary

RDR, Inc. in Chantilly, VA is seeking an Administrative Assistant to provide high-level support to the office lead and the broader department. The role requires discretion, organization, and proactive coordination of communications and schedules.

Key duties include calendar management, travel coordination, preparing reports and briefings, onboarding support, and handling sensitive information in line with security policies. TS/SCI with CI Poly is required prior to consideration.

Qualifications

• 5+ years of administrative or executive assistant experience.
• Experience handling sensitive or confidential information.
• Security clearance requirements (TS/SCI with CI Poly) prior to consideration.
• Proficiency with Microsoft 365 applications.

Responsibilities

• Manage calendars, schedule meetings, coordinate travel, and prioritize engagements.
• Prepare, review, and distribute reports, presentations, briefings, and confidential correspondence.
• Serve as a central point of contact for internal and external stakeholders on behalf of the supported leader.
• Track and support execution of departmental projects, deadlines, and operational tasks.
• Coordinate security-related meetings, including minutes and action items follow-up.
• Assist with procurement requests, budget tracking, invoice processing, and vendor coordination.
• Maintain secure filing systems and documentation per company policies.
• Monitor and manage department communications with sensitive information.
• Support onboarding, training coordination, and administrative tasks.
• Streamline department workflows through process improvements.
• Assist other Administrative Assistant positions when others are out.

Skills

Administrative support

Calendar management

Discretion

Communication

Organization

Education

High school diploma/GED

Tools

Microsoft 365

Outlook

SharePoint

Teams

Word

Excel

PowerPoint

Job description

RDR, Inc. in Chantilly, VA is seeking an Administrative Assistant to provide high-level support to the office lead and the broader department. The role requires discretion, organization, and proactive coordination of communications and schedules.

Key duties include calendar management, travel coordination, preparing reports and briefings, onboarding support, and handling sensitive information in line with security policies. TS/SCI with CI Poly is required prior to consideration.