Tatiana Sera
Falls Church,,VA
Summary
Attentive, autonomous, adaptable Executive Administrative Professional with 4+ years supporting C-suite executives in fast-paced environments. Skilled in managing complex calendars, coordinating domestic and international travel, and organizing meetings and events, while prioritizing tasks, collaborating across teams, and keeping operations running smoothly.
Overview
4
4
years of professional experience
Work History
Senior Assistant
Environmental Defense Fund
Washington, DC
09.2025 - 04.2026
- Coordinated multiple complex calendars, domestic and international travel, and meetings for senior leaders across diverse teams;
- Oversaw invoice processing, expense reporting, vendor setup, and contract coordination, thereby ensuring accuracy and compliance to internal policies;
- Facilitated collaboration across internal teams and external stakeholders to manage high-volume workflows and track deliverables.
Executive Concierge at Leidos Global Headquarters
Jones Lang LaSalle (JLL)
Reston, VA
04.2024 - 09.2025
- Acted as primary contact for C-suite leaders and visitors, managing inquiries and providing timely and professional, client-facing support;
- Coordinated logistics for Board of Directors meetings and corporate events, streamlined scheduling, organized catering support, and meeting support;
- Managed office operations and various service providers, optimizing supply management to maintain an organized executive environment.
Executive Administrative Assistant
Dawson & Associates
Washington, DC
07.2022 - 04.2024
- Coordinated CEO’s calendar and domestic/international travel, aligning priorities and optimizing time management;
- Managed sensitive correspondence and documents with discretion to enable executive decision-making;
- Oversaw expense tracking and invoice management, ensuring accuracy and accountability.
Education
Bachelor of Science - Environmental Studies
Virginia Commonwealth University
Richmond, VA05-2022
Skills
- Executive support
- Calendar management
- Travel coordination
- Meeting logistics
- Expense collation and reporting
- Stakeholder coordination and communication
- Cross-functional collaboration
- Detail-oriented, focused work ethic
Leadership And Interests
- Held leadership roles with Sigma Sigma Sorority, managing University-level chapter representation, frequent event planning for 200+ attendees, and fundraising for philanthropy;
- Avid reader, creative writer, artistically minded and adept with digital media applications, fitness enthusiast including yoga, outdoor explorer, Mediterranean foodie.
Timeline
Senior Assistant
Environmental Defense Fund
09.2025 - 04.2026
Executive Concierge at Leidos Global Headquarters
Jones Lang LaSalle (JLL)
04.2024 - 09.2025
Executive Administrative Assistant
Dawson & Associates
07.2022 - 04.2024
Bachelor of Science - Environmental Studies
Virginia Commonwealth University