Senior Accounts Payable Coordinator
(Accounts Payable | AP Specialist | AP Analyst | Invoice Processing)

Location: Sleepy Hollow, NY
Employment Type: Contract
Pay Rate: $46–$53/hour
Work Model: Onsite
Schedule: Monday–Friday | 8:00 AM–5:00 PM
Industry: Pharmaceutical / Biotech Research

Position Overview

This role supports high-volume Accounts Payable operations, including invoice processing, vendor management, purchase order matching, and ERP system transactions. Ideal candidates have strong attention to detail, ERP experience, and a solid background in full-cycle AP.

Key Responsibilities

• Process and review high?volume accounts payable invoices with accuracy and timeliness
• Perform 2-way and 3-way PO matching in ERP and invoice workflow systems
• Enter, validate, and maintain invoice data for assigned vendors and letter ranges
• Handle domestic and foreign currency invoices
• Ensure compliance with SOX controls, company policies, and AP procedures
• Perform vendor account reconciliation, statement review, and discrepancy resolution
• Respond to vendor inquiries and provide strong customer service
• Collaborate with internal departments (Procurement, Finance, Receiving)
• Support month?end close and audit requests
• Utilize document imaging, scanning, and invoice automation tools

Required Qualifications

• High school diploma or GED
• 5+ years of Accounts Payable experience (full?cycle AP preferred)
• Strong knowledge of invoice processing, vendor reconciliation, and AP workflows
• Experience with ERP systems (Oracle preferred)
• Proficiency in Microsoft Excel, Word, Outlook, and PowerPoint
• Experience with invoice workflow systems and document management tools
• Excellent organizational, communication, and time?management skills
• Strong analytical, problem?solving, and attention?to?detail skills

Preferred Skills & Keywords

• Accounts Payable (AP)
• Invoice Processing
• Vendor Management
• Vendor Reconciliation
• Purchase Orders (PO)
• 2-Way / 3-Way Matching
• ERP Systems (Oracle, SAP, NetSuite)
• Month-End Close
• SOX Compliance
• Financial Operations
• Accounting Support
• Invoice Automation
• Data Entry Accuracy
• Audit Support

System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
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