Office administrative assistant Jobs in San Mateo, CA

Description

Are you organized, proactive, and ready to make an impact? We're looking for a motivated Administrative Assistant who takes initiative and provides essential support across multiple departments in 2026. This role is crucial for maintaining smooth daily operations and ensuring that staff and management have the resources they need to succeed. The ideal candidate is detail-oriented, proactive, and possesses excellent communication skills.

What We're Looking For : Manage calendars, schedule meetings, and coordinate both internal and external communications with efficiency and professionalism. Handle phone calls, emails, and correspondence accurately and courteously. Prepare documents, reports, and presentations as needed to support teams and management. Maintain organized digital and physical filing systems to ensure easy access to important information. Assist with onboarding, travel arrangements, office supplies, and expense tracking. Support cross-departmental projects and initiatives, taking initiative to help drive success. Perform other administrative duties and special projects as assigned, demonstrating flexibility and problem-solving skills.

Requirements

1-3 years of admin or office support experience preferred. Top-notch organizational and time management skills. Excellent written and verbal communication. Comfortable with Microsoft Office, Google Workspace, and standard office tools. Detail-oriented, detail oriented, and able to maintain confidentiality. High school diploma required; Associate or Bachelor's degree preferred.

TalentMatch®

Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https : / / www.roberthalf.com / us / en / mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract / temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract / temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

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