juan diego castro castellanos
@juandiegocastrocaste
Senior executive assistant using AI to deliver fast, precise C-level support.
ColombiaWhat I'm looking for
I’m an AI-enabled executive operations professional supporting C-level clients, senior executives, and VIP stakeholders through remote administrative support, luxury hospitality standards, and international customer operations. I build repeatable workflows that turn rough direction into structured execution—improving documentation, speeding up drafts and follow-ups, and maintaining discretion and professional judgment.
From 2023–Present, I managed executive inboxes for C-level clients and used ChatGPT, Claude, and Codex to draft, research, and organize recurring administrative work—improving response times by up to 50%. Previously, as Hospitality Manager / VIP Guest Operations at Marriott International (2019–2023), I led luxury guest operations and cross-functional teams, achieving a 95% satisfaction rate; I also supported elite clientele with a 98% positive feedback score at Hotel de Paris Monte-Carlo (2024).
Experience
Work history, roles, and key accomplishments
AI Operations & Automation
Independent
Jan 2026 - Present (6 months)
Built practical AI workflow templates for executive support, including email drafting, meeting preparation, document cleanup, research synthesis, and task breakdowns. Designed repeatable prompt systems and checklists to improve inbox triage, calendar preparation, travel planning, client follow-ups, and administrative quality control.
Executive & Virtual Assistant
Freelance
Jan 2023 - Present (3 years 6 months)
Managed C-level executive inboxes by prioritizing urgent matters, organizing conversations, and drafting polished responses, improving response times by up to 50%. Coordinated multi-time-zone calendars and follow-ups, and used AI tools to speed recurring administrative tasks while maintaining professional accuracy.
Education
Degrees, certifications, and relevant coursework
Swiss Alpine Center
Tourism & Hospitality Management
2023 - 2024
Studied luxury operations, guest management, and international hospitality standards.
Universidad del Magdalena
Filmmaking
2018 - 2022
Studied creative communication, project coordination, and multimedia production.
Tech stack
Software and tools used professionally
Availability
Location
ColombiaAuthorized to work in
Job categories
Skills
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