Accounts Payable Clerk

RP Constructors, LLC • North Sioux City, SD

7d

About The Position

The Accounts Payable Clerk is responsible for managing all accounts payable functions for RP Constructors and Civil Engineers & Constructors (CeC), including ownership of the Purchase Order (PO) system. This role ensures accurate invoice processing, PO compliance, lien waiver and tax documentation compliance, timely payments, and organized financial records. The position works closely with project teams, vendors, and subcontractors in a fast-paced construction and engineering environment.

Requirements

• Associate degree (2-year degree) in Accounting, Finance, or a related field
• 2+ years of accounts payable experience (construction industry preferred)
• Experience managing or administering a purchase order system
• Strong attention to detail, organization, and follow-through
• Working knowledge of lien waivers and W-9 compliance
• Proficient in Microsoft Office (Excel, Outlook, Word)

Nice To Haves

• Construction or engineering accounting experience
• Familiarity with job cost accounting and cost codes
• Experience with accounting software systems (Foundation or similar)

Responsibilities

• Process and enter vendor and subcontractor invoices accurately and timely
• Own and administer the Purchase Order (PO) system, ensuring POs are properly created, approved, maintained, and closed
• Verify invoices against approved purchase orders, contracts, and authorizations
• Code invoices to correct job numbers, cost codes, and general ledger accounts
• Resolve PO and invoice discrepancies in coordination with project managers and field staff
• Prepare accounts payable runs and support weekly payment processing
• Review vendor invoices for proper sales tax charges and applicability by jurisdiction
• Identify and apply use tax on taxable purchases where sales tax was not charged
• Ensure sales and use tax is coded correctly to the appropriate tax and job cost accounts
• Assist with maintaining documentation supporting tax-exempt purchases when applicable
• Support monthly and quarterly sales and use tax reporting by providing accurate AP data and documentation
• Coordinate with the Controller/Accounting Manager on tax-related questions, audits, or adjustments
• Collect, review, and track conditional and unconditional lien waivers
• Ensure lien waivers align with invoice amounts, PO values, and payment timing
• Maintain lien waiver logs by project and vendor/subcontractor
• Collect, verify, and maintain W-9 forms for all vendors and subcontractors
• Maintain accurate vendor records and assist with onboarding new vendors
• Ensure vendors are compliant with company and project requirements prior to payment
• Reconcile vendor statements monthly and resolve discrepancies
• Communicate professionally with vendors and subcontractors regarding invoices, POs, payments, and documentation
• Maintain organized and audit-ready files for invoices, purchase orders, lien waivers, W-9s, and statements
• Support audits and internal reviews by providing complete AP and PO documentation

Benefits

• We offer a collaborative team environment, long-term stability, and opportunities for growth within accounting and operations.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Associate degree