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Office Admin - Irvine
Job Description
Location: Irvine, CA (Near Irvine Spectrum)
Schedule: Monday – Friday (Onsite)
Options: 8:00 AM – 5:00 PM | 8:30 AM – 5:30 PM | 9:00 AM – 6:00 PM
Pay: $24.00 - $27.00 per hour (DOE)
Work Environment: Small Office (Approx. 20 employees)
Type: Temp-to-Hire
Benefits Upon Hire: Medical, Dental, Vision, PTO, and Holidays
About Us
We are looking for a proactive and dependable Office Assistant to join our dynamic team! This role is ideal for a self-starter who thrives in a collaborative small office environment is highly organized and is seeking a long-term career path.
Key Responsibilities
Administrative Support
- Handle shared phone coverage with the team.
- Review and organize expense reports, ensuring receipts, hotel, meal, and flight details are properly documented.
- Assist with timesheet reviews for accuracy.
- Manage equipment scheduling and check-out.
- Order lunches and office supplies as needed.
- Review and manage office documents for accuracy and completeness.
Data Entry & Record Management
- Maintain accurate records and data in internal databases.
- Utilize Excel to track project documentation, timelines, and follow-ups.
- Ensure all project-related tasks are properly logged and managed.
Marketing Support
- Assist with lead tracking, follow-ups, and project closure tasks.
- Support marketing efforts by organizing and tracking internal proposals.
- High school diploma or GED equivalent.
- Proficient in Microsoft Office Suite (Word, Excel, Teams, etc.).
- Comfortable using Excel for tracking and data management.
- Excellent customer service and interpersonal skills.
- Strong organizational and time management abilities.
- Reliable, detail-oriented, and able to work independently.
If you are a motivated, detail-oriented office professional looking to grow in a supportive and engaging environment, we’d love to hear from you! This role offers growth opportunities and the chance to make a meaningful impact in a small, team-oriented office.
Meet Your Recruiter

Randi Carlson
Principal, Strategic Staffing,- Executive Search
As a partner with Mattson Resources, my focus is Executive Search and Business Development. My passion is People and building client - candidate partnerships. My joy is understanding our client’s company culture and the scope of each search request to make a perfect hire. I thrive to be a trusted resource to both my client and candidate. On-boarding top tier clients and working with career professionals to assist them in their job search has been a rewarding career. Mattson opened in 2007 with 5 employees, we have expanded our services and currently offer 5 specialty recruiting Divisions, Executive Search, Engineering, IT, Accounting, Office Professional and Skilled Technical. It brings me much joy and satisfaction to be recognized as one of Orange County’s top Search firms year after year!
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