Administrative Assistant Denver, Colorado | Robert Half

Part-Time Administrative Assistant

We are looking for a Part-Time Administrative Assistant to support daily office operations for a non-profit organization in Denver, Colorado. This long-term contract position is ideal for someone who enjoys keeping administrative processes organized, providing attentive front-desk support, and ensuring accurate documentation. The person in this role will help create a smooth experience for callers, visitors, and internal teams through dependable coordination and strong attention to detail.

Responsibilities:

• Manage day-to-day administrative tasks that keep the office running efficiently and effectively.

• Respond to incoming phone calls, direct inquiries appropriately, and provide courteous assistance to callers and visitors.

• Perform accurate data entry and maintain organized records, files, and routine documentation.

• Support front-desk and reception activities, including greeting guests and handling general office communications.

• Coordinate clerical duties such as scheduling, correspondence preparation, and document distribution.

• Assist with maintaining office supplies, tracking basic administrative needs, and supporting team requests as needed.