Description We are looking for a skilled Administrative Assistant to join our team in Orange, California, on a Contract to permanent basis. This role is ideal for someone who thrives in a fast-paced environment, has strong organizational skills, and is proficient in QuickBooks and Microsoft Excel. As part of a growing construction services team, you will play a vital role in ensuring smooth daily operations and accurate data management. Responsibilities: • Process and manage invoices in QuickBooks, including tasks such as data entry, price updates, document copying, date modifications, and prorating. • Organize and maintain filing systems while logging records and providing general clerical support. • Update and manage spreadsheets in Excel to monitor project details, costs, and other operational data. • Perform accurate and efficient 10-key data entry to support administrative tasks. • Assist with various administrative duties to ensure seamless team operations. • Communicate effectively to coordinate tasks and provide updates as needed. • Support team members by prioritizing tasks and adapting to changing needs. • Collaborate with colleagues to improve workflow processes and maintain efficiency. Requirements • At least 2 years of administrative experience, ideally in a fast-paced or construction-related environment. • Proficiency in QuickBooks and Microsoft Excel, with the ability to quickly learn new software. • Exceptional attention to detail and the ability to manage multiple tasks simultaneously. • Strong organizational and communication skills to ensure effective collaboration. • Self-driven, tech-savvy, and eager to learn new systems or processes. • Familiarity with 10-key data entry and spreadsheet management. • Preferred experience in construction or service industry administration. • Ability to work independently and prioritize tasks effectively. 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) .