Find & Apply For Office / Administrative Assistant Jobs in Irvine, California

Description We are looking for an experienced Administrative Assistant to join a collaborative office on a contract-to-permanent basis. This position supports daily office operations, provides a detail-oriented point of contact for consultants and subcontractors, and handles a range of administrative and accounting-related tasks. The ideal candidate is comfortable working onsite, communicates openly when support is needed, and brings strong Excel skills along with a team-first mindset.

Responsibilities:

• Manage day-to-day administrative activities to keep office operations organized and running smoothly.
• Serve as a welcoming and detail-oriented contact for consultants, subcontractors, and other visitors interacting with the office.
• Answer inbound calls, respond to routine inquiries, and direct requests to the appropriate team members.
• Enter, update, and maintain records with accuracy, including data tied to administrative accounting support.
• Use Excel regularly to prepare, organize, and track information for reporting and internal coordination.
• Provide receptionist coverage and general front-office support in an onsite office environment.
• Assist with ad hoc projects and administrative requests as business needs evolve.
• Communicate proactively with the team when questions arise or additional guidance is needed to complete assignments effectively. Requirements
• At least 2 years of experience in an administrative assistant, office support, or similar role.
• Strong working knowledge of Excel for day-to-day business use.
• Experience handling inbound calls, reception responsibilities, and general office administration.
• Accurate data entry skills with strong attention to detail.
• Ability to work fully onsite in Irvine, California.
• Clear verbal communication skills and the confidence to ask for help when needed.
• Comfortable working in a small, collaborative office where teamwork and accountability are important.

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