Executive Assistant (Senior Coordinator, Admin)

This position supports the Portfolio Director, directors, program managers, and more than 600 employees across multiple programs, offices, and laboratory spaces. Responsibilities include complex calendar management, meeting and conference logistics, travel and expense processing, document preparation, visitor requests, employee transitions, and administrative process improvement. The role requires frequent coordination with leaders and administrative teams across locations and time zones, along with discretion when handling sensitive information. It suits a highly organized, diplomatic self-starter who can manage changing priorities and work independently while collaborating effectively with others. Candidates need relevant administrative experience, Microsoft Office skills, and an active Secret clearance, with aerospace or defense experience and a Top Secret clearance preferred.