Administrative Assistant Castle, DE | Robert Half

Administrative Assistant

Our nonprofit organization is seeking a dependable and organized Administrative Assistant to support daily office operations in New Castle, Delaware. This role is ideal for a professional who enjoys helping mission-driven teams stay organized, efficient, and responsive. The Administrative Assistant will provide clerical, scheduling, communication, and administrative support to leadership and program staff while helping ensure smooth day-to-day operations.

Key Responsibilities

• Provide general administrative support to leadership, program teams, and office staff.
• Answer phones, respond to emails, and greet visitors in a professional and welcoming manner.
• Schedule meetings, manage calendars, and coordinate conference rooms or virtual meeting logistics.
• Prepare correspondence, reports, presentations, and other documents.
• Maintain organized filing systems for electronic and paper records.
• Assist with data entry, database updates, and recordkeeping.
• Order office supplies and help manage vendor and service relationships.
• Support mail distribution, shipping, and other front-office functions.
• Help coordinate events, volunteer activities, board meetings, or donor communications as needed.
• Assist with expense tracking, invoice processing, and basic administrative support for budgets or grant-related documentation.
• Maintain confidentiality of sensitive employee, donor, client, and organizational information.
• Support special projects and other administrative tasks as assigned.