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Description We are looking for a motivated Administrative Assistant to join our team in Costa Mesa, California. This long-term contract opportunity is perfect for someone who thrives in an onsite, fast-paced environment and enjoys engaging with clients and team members. The ideal candidate will possess strong organizational skills and the ability to handle multiple tasks efficiently while maintaining a detail-oriented demeanor.

Responsibilities:

• Serve as the first point of contact for clients by managing receptionist duties and greeting visitors courteously.

• Provide comprehensive administrative support to internal teams and ensure smooth daily operations.

• Handle light billing tasks and assist with financial record-keeping using QuickBooks and other software tools.

• Maintain accurate records and perform data entry tasks to support office operations.

• Collaborate with team members to manage schedules, appointments, and meetings.

• Utilize Microsoft Office and ADP Total Source software to complete administrative tasks efficiently.

• Communicate effectively with internal staff and external clients to address inquiries and provide solutions.

• Assist in organizing office supplies, maintaining a tidy workspace, and ensuring resources are readily available.

• Demonstrate adaptability by learning new processes and contributing to improvements.

• Uphold a smart business casual dress code and represent the company in a detail-oriented manner. Requirements • Proven experience in administrative assistance or similar roles.

• Proficiency in Microsoft Office Suite and familiarity with ADP Total Source.

• Experience with QuickBooks Online or Desktop is a plus.

• Strong communication skills, both written and verbal, to interact with clients and colleagues.

• Ability to manage multiple tasks and prioritize effectively in a dynamic setting.

• Excellent attendance and reliability, with a willingness to learn and grow.

• Detail-oriented and approachable demeanor to foster positive relationships.

• Tech-savvy with the ability to quickly adapt to new software and tools. 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.

• 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) and Privacy Notice (https://www.roberthalf.com/us/en/privacy) .