Executive Administrative Assistant

MSCI Inc.; New York (NY); On-site; USD 80,000 - 110,000; Full time

Job summary

MSCI Inc. is seeking a highly organized Executive Assistant to support multiple senior leaders in a fast-paced, client-focused environment.

This role requires discretion, proactive scheduling, and strong relationship-building across internal teams and external partners. You will manage calendars across time zones, arrange complex travel, coordinate large meetings and events, and handle ad hoc projects that drive operational efficiency.

Qualifications

• 5+ years of experience supporting senior-level management.
• Strong proficiency in Microsoft Office 365.
• Experience with travel and expense management.
• Excellent communication and discretion.
• Ability to manage complex calendars and events.

Responsibilities

• Manage complex executive calendars across time zones and prioritize commitments.
• Coordinate travel and expense reports, domestic and international.
• Plan and execute high-profile events, logistics and agendas.
• Liaise with executives and internal/external stakeholders.
• Support ad hoc projects and cross-functional initiatives.
• Improve administrative processes and workflows with the Admin Community.

Skills

Executive support

Calendar management

Travel coordination

Event planning

Communication

Discretion

Organizational skills

Tools

Microsoft Office 365

Navan

Concur

Microsoft Teams

Zoom

Job description

MSCI is a global leader in financial analytics and investment solutions, dedicated to innovation and excellence. We are seeking a highly organized, proactive, and detail-oriented Executive Assistant to support multiple senior leaders within our organization. This role requires professionalism, discretion, and the ability to anticipate needs in a dynamic and fast-paced environment. The ideal candidate thrives in a client-centric setting, is experienced in supporting senior leaders, building relationships, and contributing to strategic initiatives that drive operational efficiency.

As an Executive Assistant, you will play a crucial role ensuring the smooth operation of the team by managing key administrative tasks, facilitating communication, and optimizing efficiency. Your responsibilities will include, but are not limited to:

• Manage complex executive calendars, coordinating across time zones, handling last-minute changes, and ensuring seamless scheduling and prioritization of commitments across multiple stakeholders
• Coordinate detailed travel arrangements, including international and domestic logistics, ensuring timely processing of expense reports
• Plan and execute high-profile events, (offsites, roadshows, etc.) managing logistics such as venue booking, catering, agenda preparation, and post-event action items
• Act as a liaison between executives and internal/external stakeholders, ensuring effective communication and follow-ups
• Assist with ad hoc projects initiatives requiring cross-functional collaboration, contributing to strategic planning and execution
• Continuously evaluate and optimize administrative processes and best practices while partnering with the Administrative Community to enhance office management and workflow, including backup support

• 5+ years of experience supporting senior-level management in an executive assistant capacity
• Strong technical proficiency in Microsoft Office 365 Suite (Word, PowerPoint, Excel, SharePoint), T&E management (Navan, Concur), and collaboration platforms (Microsoft Teams, Zoom); experience with AI-driven tools or workflow automation is a plus
• Excellent verbal and written communication skills, with strong interpersonal and relationship-building abilities
• Strong judgment, discretion, and ability to handle confidential information
• Highly detail-oriented with strong organizational and follow-through abilities
• Adaptability and willingness to acquire new competencies and take on challenges in a dynamic business environment