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Robert Half Logo Robert Half · Office Administration

Administrative Assistant

United States, Irvine · Job Posted May 27, 2026
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Job Description

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.

Job Responsibility

  • 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

Requirements

  • 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

What we offer

  • Medical
  • Vision
  • Dental
  • Life and disability insurance
  • 401(k) plan
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