Senior Administrative Assistant

Aon Corporation•Denver, CO

2d•Onsite

About The Position

Aon is hiring a Senior Administrative Assistant for a full-time, office-based role in its Denver, Colorado office. The position combines administrative support, workplace services, and on-site event assistance. The Senior Administrative Assistant serves as a visible, trusted resource for colleagues, leaders, clients, visitors, vendors, and workplace partners, helping ensure smooth office operations and positive employee and client experiences. The role works closely with leaders and cross-functional teams and contributes to workplace readiness, operational efficiency, and the coordination of meetings, events, and executive priorities. It requires a highly organized, service-oriented professional who is proactive, polished, flexible, and comfortable balancing hands-on support with coordination, judgment, and follow-through. The position is in the office five days per week and involves regular interaction with colleagues, senior leaders, clients, visitors, vendors, Facilities, IT, Security, and other workplace partners.

Requirements

Experience providing administrative or executive support in a corporate, professional services, hospitality, or client-focused environment.
Ability to manage confidential information with professionalism, sound judgment, and discretion.
Experience with document management, file organization, records management, and data entry.
Strong written communication and proofreading skills, with exceptional attention to detail.
Experience managing email communications, prioritizing requests, and coordinating follow-up actions.
Strong organizational, customer service, and problem-solving abilities.
Experience partnering with leaders, vendors, and cross-functional teams in a fast-paced environment.
Ability to coordinate meetings, VIP visits, small on-site events, and day-of logistics effectively.
Proficiency with Microsoft 365, including Outlook, Teams, Word, PowerPoint, and Excel.
Must work in the Denver office five days per week.

Responsibilities

Prepare, print, distribute, organize, proofread, and maintain business documents, presentations, meeting materials, records, files, and correspondence.
Prepare meeting agendas, capture notes, document decisions, and monitor action items when requested.
Manage ad hoc requests professionally, accurately, discreetly, and responsively.
Coordinate virtual, in-person, and off-site meetings, including agendas, materials, catering, technology, and logistics.
Coordinate office supplies, mail services, meeting spaces, workplace technology, and vendor-supported services.
Monitor designated inboxes, prioritize communications, and ensure timely follow-up on requests and action items.
Provide administrative support to assigned consumers and business leaders, including calendar management, scheduling, travel planning, and expense reporting.
Serve as an on-site resource for workplace operations, office readiness, visitor support, and general office administration.
Welcome clients, visitors, senior leaders, and executives, and support VIP visits and office events.
Support onboarding activities, workplace initiatives, on-site office events, meetings, and employee- or client-facing events.
Assist with room setup, registration, guest greeting, signage, meeting materials, catering coordination, and day-of event execution.
Coordinate event teardown, follow-up items, and post-event workplace readiness.
Partner with Facilities, IT, Security, and vendors to resolve workplace issues and maintain a seamless employee experience.
Coordinate effectively and complete clear handoffs across AUAO, GCC administrative support, Facilities, IT, Security, vendors, and Marketing & Events.