Senior Administrative Assistant

Responsibilities

The Senior Administrative Assistant provides comprehensive administrative support, including calendar management, travel planning, and document preparation for business leaders. Additionally, the role manages on-site workplace services, visitor support, and the coordination of meetings and office events.

Requirements

Candidates must have experience providing administrative or executive support in a professional, client-focused environment. Proficiency in Microsoft 365 and strong organizational, communication, and problem-solving skills are required.

Skills

• Administrative support
• Calendar management
• Travel planning
• Expense reporting
• Document management
• Records management
• Event coordination
• Customer service
• Microsoft 365
• Outlook
• Teams
• Word
• PowerPoint
• Excel
• Communication
• Problem-solving

Benefits

• 401(k) savings plan
• Employee stock purchase plan
• Medical insurance
• Dental insurance
• Vision insurance
• Paid time off
• Paid holidays
• Paid sick leave
• Short-term disability
• Long-term disability
• Health savings account
• Life insurance
• Adoption assistance
• Tuition assistance
• Commuter benefits
• Employee assistance program

About this role

Aon is looking for a Senior Administrative Assistant!
Aon is in the business of better decisions
At Aon, we shape decisions for the better to protect and enrich the lives of people around the world.
As an organization, we are united through trust as one engaged team, and we are passionate about helping our colleagues and clients succeed.
What the Day Will Look Like
The Senior Administrative Assistant is a full-time, office-based role responsible for providing a combination of administrative support, workplace services, and on-site event assistance. This role serves as a visible and trusted on-site resource, helping colleagues, leaders, clients, and visitors navigate the office environment smoothly and professionally.
This role is ideal for a highly organized, service-oriented professional who enjoys being in the office, creating positive experiences for others, and serving as a dependable resource for administrative, workplace, VIP, and event-related needs. The successful candidate will be proactive, polished, flexible, and comfortable balancing hands-on support with strong coordination, judgment, and follow-through.
Working Model
Full-time, five days per week in the office in our Denver, CO office.
Requires regular interaction with colleagues, senior leaders, clients, visitors, vendors, Facilities, IT, Security, and other workplace partners.
How this opportunity is different
This role offers the opportunity to work closely with leaders and cross-functional teams while influencing the day-to-day employee and client experience. Your work will contribute directly to workplace readiness, operational efficiency, and the successful coordination of meetings, events, and executive priorities.
Administrative Support
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.
What the day will look like
Workplace and General Location Services:
Coordinate virtual, in-person, and off-site meetings—including agendas, materials, catering, technology, and logistics—as well as office supplies, mail services, meeting spaces, workplace technology, and vendor-supported services.
Prepare, proofread, organize, and maintain business documents, records, files, presentations, and correspondence.
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 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 and Experiences that Will Lead to Success
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.
Clear handoffs and collaboration across AUAO, GCC administrative support, Facilities, IT, Security, vendors, and Marketing & Events.
Proficiency with Microsoft 365, including Outlook, Teams, Word, PowerPoint, and Excel.
Success Measures
Timely, accurate, and high-quality administrative support.
Consistent workplace readiness and reliable location services support.
Positive feedback from leaders, colleagues, clients, visitors, and workplace partners.
Effective coordination of meetings, VIP visits, small on-site events, and day-of logistics.
Strong responsiveness to issues, requests, and escalations.
Clear handoffs and collaboration across AUAO, GCC administrative support, Facilities, IT, Security, vendors, and Marketing & Events.
For positions in San Francisco and Los Angeles, we will consider for employment qualified applicants with arrest and conviction record in accordance with local Fair Chance ordinances.
Aon is not accepting unsolicited resumes from search firms for this position. If you are a search firm, you will not be compensated in any way for your submission of a candidate, even if Aon hires that candidate.
Nothing in this job description restricts management's right to assign or reassign duties and responsibilities to this job at any time.
Pay Transparency Laws:
The salary range for this position (intended for U.S. applicants) is $61,500 to $80000 annually. The actual salary will vary based on applicant’s education, experience, skills, and abilities, as well as internal equity and alignment with market data. The salary may also be adjusted based on applicant’s geographic location.
A summary of all the benefits offered for this position:
Aon offers a compr...

About Aon Corporation

Financial Services · 10,001+ employees · headquartered in London