Senior Executive Assistant

CACI•Arlington, VA

About The Position

CACI is seeking a highly experienced and exceptionally capable Executive Assistant to provide comprehensive, high-level administrative and operational support to the Chief Information Officer (CIO) within Diplomatic Security’s Executive Directorate, Office of the Chief Technology Officer (DS/EX/CTO). This is a dynamic, fast-paced role requiring a seasoned professional with a proven track record of supporting C-suite or senior government executives, preferably within federal or federal contracting environments. The ideal candidate is a proactive, detail-oriented professional who operates with discretion, sound judgment, and a high degree of initiative. Serving as a trusted partner to the CIO, this individual will act as a critical force multiplier—managing complex calendars, prioritizing high-visibility communications, and enabling seamless coordination across Diplomatic Security components, Department of State leadership, interagency partners, and external stakeholders.

Requirements

Minimum 10+ years of progressive experience as an Executive Assistant, Senior Administrative Assistant, or Chief of Staff support role.
Expert-level proficiency with Microsoft Office Suite (Outlook, Word, Excel, PowerPoint, Teams) and collaboration tools (SharePoint, Zoom, WebEx).
Exceptional written and verbal communication skills; ability to draft and edit executive-level documents with minimal oversight.
Strong interpersonal skills with the ability to interact confidently with senior government officials, C-suite executives, and external stakeholders.
Demonstrated ability to handle highly sensitive and confidential information with absolute discretion and professionalism.
Strong organizational and project management skills with extreme attention to detail.
Ability to work extended hours, adjust to shifting priorities, and be available outside normal business hours when needed.
Active Secret clearance or ability to obtain and maintain a clearance.

Nice To Haves

Prior experience supporting a federal agency CIO, Deputy CIO, or IT-focused executive within a government or government contracting environment.
Familiarity with federal acquisition, procurement, or compliance processes (FAR, DFARS).
Experience with government travel systems (e.g., Concur, E2 Solutions, DTS).
Experience with task and project management tools (e.g., Jira, Asana, Microsoft Project).
Bachelor's degree in Business Administration, Communications, or a related field.

Responsibilities

Manage a complex, high-volume executive calendar for the CIO — anticipating conflicts, coordinating across government agencies and senior leadership, and preparing daily briefings with agendas, background materials, and action items.
Serve as the primary liaison between the CIO's office and internal teams, government clients, subcontractors, and executive leadership; screen and triage high-priority communications and draft correspondence on the CIO's behalf.
Plan and support senior-level meetings, executive briefings, and events — including logistics, read-aheads, and follow-up tracking to ensure decisions and action items are executed.
Coordinate complex domestic and international travel arrangements; prepare detailed itineraries and briefing packages, and manage expense reconciliation in compliance with company and government policies.
Track CIO-level priorities, projects, and deliverables across program teams and government counterparts; proactively surface risks and support strategic initiatives and special projects as directed.
Handle all administrative operations with discretion — including sensitive correspondence, procurement requests, expense processing, and management of confidential information.