Senior Administrative & Office Operations Lead

Aon plc; Denver (CO); On-site; USD 62,000 - 80,000; Full time

Benefits offered by this job

401(k) plan

Employee stock purchase plan

Long-term incentive awards

Medical, dental and vision insurance

Paid time off & holidays

Paid vacation & sick leave

Job summary

Aon plc is seeking a Senior Administrative Assistant to provide on-site support, workplace services, and event coordination in our Denver office. The role emphasizes reliability, discretion, and a proactive approach to supporting leaders, clients, and colleagues.

The ideal candidate is highly organized, enjoys working in an office environment, and will balance hands-on support with strong coordination and follow-through to ensure a smooth employee and client experience.

Qualifications

• 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.
• Effective coordination of meetings, VIP visits, small on‑site events, and day‑of logistics.
• Proficiency with Microsoft 365, including Outlook, Teams, Word, PowerPoint, and Excel.

Responsibilities

• Prepare, print, distribute, and organize business documents, presentations, meeting materials, and other administrative resources.
• Prepare agendas, capture notes, document decisions, and monitor action items when requested. Organize business documents.
• Manage ad hoc requests with professionalism, accuracy, discretion, and a high level of responsiveness.
• Coordinate virtual, in‑person, and off‑site meetings—including agendas, materials, catering, technology, and logistics.
• 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 while supporting VIP visits and office events.
• Support onboarding activities, workplace initiatives, on‑site office events, meeting, and employee or client-facing events.
• Assist with room setup, registration, guest greeting, signage, meeting materials, catering coordination, and day‑of execution.
• Help 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.

Skills

Administrative support

Confidentiality

Document management

Written communication

Email management

Organization

Cross-functional collaboration

Meeting logistics

Microsoft 365

Tools

Microsoft 365

Job description

Aon plc is seeking a Senior Administrative Assistant to provide on-site support, workplace services, and event coordination in our Denver office. The role emphasizes reliability, discretion, and a proactive approach to supporting leaders, clients, and colleagues.

The ideal candidate is highly organized, enjoys working in an office environment, and will balance hands-on support with strong coordination and follow-through to ensure a smooth employee and client experience.