Administrative Assistant III / Accounts Payable Clerk

Position Summary

We are seeking a detail\-oriented Administrative Assistant III / Accounts Payable Clerk with strong Microsoft Office skills—particularly Excel, including VLOOKUP, pivot tables, and spreadsheet management. This role supports Accounts Payable operations, vendor payments, invoice processing, and administrative functions within a high\-volume, deadline\-driven environment. Experience in government, public sector, or non\-profit accounting is highly preferred.

This is a temporary opportunity offering professional growth and the chance to support a mission\-driven organization.

Key Responsibilities

Accounts Payable & Vendor Support

• Process vendor invoices accurately and in a timely manner.
  


• Perform 3\-way matching (invoice, PO, receipts) when required.
  


• Prepare and route vendor payments, check requests, and ACH documentation.
  


• Maintain vendor records, W\-9s, and ensure compliance with organizational policies.
  


• Research and resolve invoice discrepancies, payment questions, and vendor inquiries.
  

Excel & Data Management

• Utilize VLOOKUP, pivot tables, filters, and advanced Excel functions to analyze and reconcile data.
  


• Maintain AP logs, spreadsheets, and financial tracking documents.
  


• Support monthly reconciliation and reporting.
  

Administrative Support

• Prepare correspondence, reports, and internal communications.
  


• Maintain organized filing systems (digital and physical).
  


• Support department leadership with scheduling, documentation, and administrative tasks.
  


• Assist with audits, compliance requirements, and internal reviews.
  

General Office & Compliance

• Ensure accuracy and confidentiality of all financial and administrative records.
  


• Adhere to internal controls, procurement rules, and compliance standards typical of government or non\-profit environments.
  


• Collaborate with internal departments such as Finance, HR, and Procurement.
  

Requirements

Qualifications

Required

• 3–5 years of experience as an Administrative Assistant, AP Clerk, or related role.
  


• Strong Microsoft Excel proficiency (VLOOKUP required, pivot tables preferred).
  


• Experience with vendor payments, invoice processing, and accounts payable workflows.
  


• High attention to detail and accuracy.
  


• Excellent communication and customer service skills.
  

Preferred

• Experience in government, municipality, county, public sector, or non\-profit organizations.
  


• Experience with ERP or accounting software (e.g., SAP, Oracle, PeopleSoft, NetSuite, or similar).
  


• Knowledge of procurement policies and compliance standards.