María S. Castillo
Available remotely & on-site in Buenos Aires

Your right hand in Buenos Aires and the World

Bilingual executive support, local operations, and comprehensive management for C-Levels and international business owners.

María S. Castillo Business Assistant
Track Record
C-Level Experience

Corporate Experience and Problem-Solving. All in one.

With years of experience assisting C-Level Directors, I deeply understand the complexity of operating at a high level. I'm not just a virtual assistant; I'm your on-the-ground Business Manager.

I specialize in agilely navigating Argentine bureaucracy, managing imports, and maintaining impeccable internal and external communication with a highly analytical, goal-oriented profile.

Native Bilingual
EN/ES Native Fluency
Hybrid Support
Virtual & BA Local
Data-Driven
Excel / Dashboards

Professional Track Record

Beyond titles, here is the concrete value I bring to your operations.

Commercial Analyst

Accelerate your supply chain by centralizing B2B purchasing and international logistics. I minimize risks and customs delays so your imports flow smoothly, protecting your margins with accurate sales forecasts and reporting.

Communication Analyst

Elevate your brand by managing campaigns from start to finish. I free up your schedule by organizing corporate events and webinars, ensuring flawless communication and consistently impactful materials.

Administrative Assistant to Management

Reclaim 10 hours of your week by delegating complex operations and calendar management. I instantly solve international travel logistics and precisely manage budgets so your IT team can focus solely on strategy.

Regional Executive Assistant

Multiply your operational capacity with flawless C-Level regional support. I take charge of high-demand tasks: from key bids and large-scale expense reporting to coordinating strict corporate itineraries, with zero margin for error.

Service Pillars

Comprehensive Executive Support

Calendar management, billing, reports, and Excel dashboards to optimize your decisions.

Local Operations (BA)

Navigating complex Argentine bureaucracy, high-value in-person errands, and import tracking.

Corporate Travel & Events

Flawless organization of business trips, transfers, and corporate event planning.

Communications & Marketing

Support in campaigns, internal communication, and operational marketing tasks.

Let's discuss your needs

Write to me detailing what you need to solve, and I'll reply with a custom plan.