We are looking for an organized Administrative Assistant to support daily office operations in Irvine, California. This Contract position will serve as a key point of contact for visitors, phone inquiries, and administrative requests while helping maintain a detail-oriented and welcoming workplace. The role also partners closely with project accounting and internal teams to keep records, documents, and office processes accurate and on schedule. Responsibilities: • Manage the front desk by answering incoming calls, welcoming guests, directing inquiries, and ensuring messages and deliveries are handled efficiently. • Keep reception, meeting spaces, and shared hospitality areas presentable and ready for visitors, staff meetings, and client interactions. • Support mailroom and shipping activities by coordinating incoming and outgoing packages, certified mail, and delivery tracking. • Provide day-to-day administrative assistance through meeting coordination, filing, correspondence preparation, printing requests, shipping arrangements, and office service follow-up. • Assist the Project Accounting team with document scanning, check log updates, data entry, and job record maintenance within Deltek Vantagepoint. • Prepare high-quality client-facing and internal materials such as proposals, reports, letters, specifications, and schedules in line with company formatting standards. • Help maintain office supply levels, coordinate refreshments for common areas and meetings, and submit facility-related requests to property management as needed. • Contribute backup support for administrative coverage during team absences to help maintain consistent office operations.

• High school diploma or equivalent required. • At least 2 years of administrative, receptionist, or office support experience. • Strong working knowledge of Microsoft Office applications, including Outlook, Word, Excel, and Teams. • Ability to manage multiple tasks independently while maintaining accuracy and follow-through. • Clear verbal and written communication skills for interacting with clients, vendors, colleagues, and leadership. • Strong attention to detail with a commitment to producing accurate, well-presented work. • Experience with data entry and general office coordination; familiarity with Deltek Vantagepoint is an advantage but not required.

<h3 class="rh-display-3--rich-text">TalentMatch®</h3> 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. <a href="https://www.roberthalf.com/us/en/mobile-app" target="_blank">Download the Robert Half app</a> 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 <a href="https://roberthalf.gobenefits.net/" target="_blank">roberthalf.gobenefits.net</a> for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s <a href="https://www.roberthalf.com/us/en/terms">Terms of Use</a> and <a href="https://www.roberthalf.com/us/en/privacy">Privacy Notice</a>.

Irvine, CA
onsite
Temporary / Contract
21.85 - 25.3 USD / Hourly
We are looking for an organized Administrative Assistant to support daily office operations in Irvine, California. This Contract position will serve as a key point of contact for visitors, phone inquiries, and administrative requests while helping maintain a detail-oriented and welcoming workplace. The role also partners closely with project accounting and internal teams to keep records, documents, and office processes accurate and on schedule. Responsibilities: • Manage the front desk by answering incoming calls, welcoming guests, directing inquiries, and ensuring messages and deliveries are handled efficiently. • Keep reception, meeting spaces, and shared hospitality areas presentable and ready for visitors, staff meetings, and client interactions. • Support mailroom and shipping activities by coordinating incoming and outgoing packages, certified mail, and delivery tracking. • Provide day-to-day administrative assistance through meeting coordination, filing, correspondence preparation, printing requests, shipping arrangements, and office service follow-up. • Assist the Project Accounting team with document scanning, check log updates, data entry, and job record maintenance within Deltek Vantagepoint. • Prepare high-quality client-facing and internal materials such as proposals, reports, letters, specifications, and schedules in line with company formatting standards. • Help maintain office supply levels, coordinate refreshments for common areas and meetings, and submit facility-related requests to property management as needed. • Contribute backup support for administrative coverage during team absences to help maintain consistent office operations.
2026-07-14T00:00:00Z

Administrative Assistant Job in Irvine, CA | Robert Half