We are looking for an Administrative Assistant to join a growing team in Irvine, California on a contract basis with the potential for a permanent position. This onsite role supports daily office operations while also handling core bookkeeping tasks in QuickBooks Desktop, making it ideal for someone who is organized, detail-oriented, and comfortable balancing administrative and financial responsibilities. The person in this position will help keep the office running smoothly, provide support to leadership, and contribute to efficient coordination across day-to-day business activities. Responsibilities: • Manage day-to-day bookkeeping activities in QuickBooks Desktop, including invoice entry and support for accounts payable and accounts receivable functions. • Assist with payroll-related administrative tasks, track business expenses, and prepare routine financial and operational reports for leadership review. • Welcome visitors, answer inbound calls, respond to correspondence, and coordinate meetings to maintain an efficient front-office environment. • Organize and maintain electronic and physical files such as vendor records, customer information, contracts, and other essential office documentation. • Monitor outstanding action items, follow up with internal and external contacts, and help keep administrative workflows on schedule. • Provide general administrative support across departments and assist with special projects that improve office organization and efficiency.

• At least 3 years of experience in an administrative support, office coordination, or similar role. • Hands-on experience using QuickBooks Desktop is required. • Ability to perform data entry accurately and manage multiple administrative tasks with strong attention to detail. • Experience handling receptionist or front-desk responsibilities, including answering inbound calls and greeting visitors. • Familiarity with basic bookkeeping processes, including invoicing, expense tracking, and support for payables and receivables. • Strong written and verbal communication skills with the ability to interact professionally across teams. • Comfortable working onsite in a permanent role in Irvine, California.

<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 to Hire
25.65 - 29.7 USD / Hourly
We are looking for an Administrative Assistant to join a growing team in Irvine, California on a contract basis with the potential for a permanent position. This onsite role supports daily office operations while also handling core bookkeeping tasks in QuickBooks Desktop, making it ideal for someone who is organized, detail-oriented, and comfortable balancing administrative and financial responsibilities. The person in this position will help keep the office running smoothly, provide support to leadership, and contribute to efficient coordination across day-to-day business activities. Responsibilities: • Manage day-to-day bookkeeping activities in QuickBooks Desktop, including invoice entry and support for accounts payable and accounts receivable functions. • Assist with payroll-related administrative tasks, track business expenses, and prepare routine financial and operational reports for leadership review. • Welcome visitors, answer inbound calls, respond to correspondence, and coordinate meetings to maintain an efficient front-office environment. • Organize and maintain electronic and physical files such as vendor records, customer information, contracts, and other essential office documentation. • Monitor outstanding action items, follow up with internal and external contacts, and help keep administrative workflows on schedule. • Provide general administrative support across departments and assist with special projects that improve office organization and efficiency.
2026-06-01T00:00:00Z

Administrative Assistant Job in Irvine, CA | Robert Half