Senior Administrative Assistant (Ciudad de México)

General Description

We are seeking a Senior Administrative Assistant professional providing high-level support to senior leadership.

• Provide high‑level administrative support to leadership, ensuring effective coordination of meetings, events, travel, document control, expense management, and prioritization of key activities to maximize executive productivity.
• Manage strategic priorities and ensure seamless coordination across internal and external stakeholders.
• Act as a liaison between management and internal/external areas, reporting directly to the General Manager and providing on‑site support.

Essential Functions

• Support the General Manager of Mexico with administrative requirements, logistics, traveling, and agenda management.
• Support Management Team Directors (Medical, Commercial, Market Access, Finance & Commercial Operations) by coordinating meetings, events, CME initiatives, customer support and purchasing processes.
• Coordinate travel arrangements for senior leadership, including domestic and international flights, hotels, itineraries, quotations, and expense closures.
• Provide general administrative support: documentation, communications, filing compliance.
• Assist the Finance Manager with procurement processes, expense tracking, invoices, reimbursements, and vendor coordination.
• Manage vendor onboarding, maintain the vendor database (ERP Concur), and prepare and track purchase orders.
• Build and maintain relationships with vendors, service providers, and building management.
• Process and follow up purchase orders end to end from distributors.
• Follow up on cross‑functional meetings and CME initiative logistics.
• Manage HCP administrative follow‑up (onboarding, SOW, payments, others).
• Handle logistics for events, scheduling, and coordination with agencies.
• Manage executive calendars and prioritize meetings.
• Coordinate agendas, meeting minutes, and compliance documentation requirements.

Minimum Requirements – Education and Experience

• Bachelor’s Degree preferred in Business Administration, Communications, International Relations, or a related field.
• Bilingual with fluency in English; intermediate to advanced written and verbal proficiency.
• 5+ years of experience in administrative, operations, or office management roles supporting executive leadership.

Other Experience

• Experience in corporate environments with exposure to executive committees or leadership team events.
• Experience with ERP/CRM systems (SAP).
• Expense tracking and administrative control management.
• Strong organizational and multitasking capabilities in fast‑paced environments.
• Strong stakeholder management skills with internal teams and external partners.
• High attention to detail, proactive and solution‑oriented mindset.
• Teamwork and problem‑solving skills.

Supervisory Responsibilities

No

Travel

Not required

Computer Skills

• Microsoft Office, Teams, Zoom, Outlook
• SAP operating modules SD / FE

Integral Competencies

Our values of Patients First, Driving Excellence, Bold Ingenuity, and Collaborative Spirit are reflected in the following global competencies:

• Fosters Teamwork
• Provides and Solicits Honest and Actionable Feedback
• Self‑Awareness
• Acts Inclusively
• Demonstrates Initiative
• Entrepreneurial Mindset
• Continuous Learning
• Embraces Change
• Results‑Oriented
• Analytical Thinking / Data Analysis
• Financial Excellence
• Communicates with Clarity

Equal Opportunity Employer

We are proud to be an equal opportunity employer. BeOne does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, disability, national origin, veteran status or any other basis covered by appropriate law. All employment is decided on the basis of qualifications, merit, and business need.