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Sr. Administrative Assistant

Job

Robert Half

La Mesa, CA (In Person)

Full-Time

Posted 5 weeks ago (Updated 4 weeks ago) • Actively hiring

Expires 5/28/2026

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Job Description

Our client in the nonprofit sector is seeking a highly skilled and experienced Senior Administrative Assistant to provide advanced support to leadership and help drive the organization's mission forward. This role offers an opportunity to make a meaningful impact while leveraging your expertise in managing complex administrative functions.
Responsibilities:
Manage executive and team calendars, schedule meetings, and coordinate travel arrangements.

Prepare, edit, and distribute correspondence, grant documents, reports, and presentations.

Act as the primary point of contact for internal and external stakeholders.

Maintain confidential organizational records, databases, and filing systems.

Support donor relations, event planning, and project coordination efforts.

Mentor and assist junior administrative team members.

Assist with onboarding, training, and office procedures.

Process invoices, track expenses, and help with basic budget monitoring.

Handle sensitive information with professionalism and discretion.

Execute special projects and additional duties as assigned.

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