Office Administrator- AR/AP Support

TEKsystems•Mesa, AZ

1d•$22 - $25•Onsite

About The Position

We are seeking a detail‑oriented Office Administrator to handle daily office operations while providing support to the Accounting team with Accounts Receivable (AR) and Accounts Payable (AP) tasks. The ideal candidate is organized, professional, and comfortable working in a fast‑paced environment. Construction Industry expereinced is preferred.

Requirements

1–3 years of administrative experience, preferably in an office setting
Basic understanding of AR/AP processes
Strong proficiency with Microsoft Office (Excel, Outlook, Word)
Excellent communication and interpersonal skills
High attention to detail and strong organizational abilities
Ability to multitask, prioritize, and meet deadlines
Reliable, professional, and self‑motivated

Nice To Haves

Experience with accounting software (QuickBooks, Sage, NetSuite, or similar) is a plus
Construction Industry expereinced is preferred.

Responsibilities

Serve as the primary point of contact for incoming calls, emails, and visitors
Maintain office supplies, equipment, and vendor relationships
Coordinate scheduling, meetings, and calendars
Assist with filing, document management, and general administrative duties
Prepare reports, letters, and internal communications
Support HR tasks such as onboarding paperwork and employee file organization (as needed)
Assist with generating and sending customer invoices
Track outstanding payments and follow up on overdue accounts
Record customer payments and update accounting systems
Maintain accurate AR files and documentation
Process vendor invoices and verify accuracy
Match invoices with purchase orders and receipts
Assist with weekly check runs and payment posting
Maintain accurate AP records and resolve invoice discrepancies