Sr. Accounts Payable Specialist

GTI Energy • Rosemont, IL

15h • Hybrid

About The Position

The Sr. AP Specialist is responsible for the accurate, timely, and compliant processing of vendor invoices, with a strong focus on purchase order (PO) matching, project-based accounting, and grant-funded expenditures. This role serves as a subject-matter expert for complex AP transactions, supports month-end close activities, and partners closely with Procurement, Project Management, and Grants teams to ensure financial accuracy and compliance with internal controls and external regulations.

Requirements

• Demonstrated expertise in PO-based invoicing and 3-way matching
• Hands-on experience with project accounting and grant-funded expenses
• Strong knowledge of AP controls, invoice auditing, and expense allocation
• Proficiency with ERP systems; preferably Deltek Costpoint (e.g., Oracle, SAP, Workday, NetSuite, or similar) and advanced Excel skills
• Excellent analytical, organizational, and problem-solving abilities
• Strong communication skills with the ability to work cross-functionally
• Strong internal and external customer service professionalism
• Bachelor’s degree in Accounting, Finance, or a related field (or equivalent experience)
• 5+ years of Accounts Payable experience, including senior-level or lead responsibilities

Responsibilities

• Perform end to end processing of vendor invoices, including high volume and complex transactions
• Execute 2 way and 3-way PO matching (invoice, PO, and receipt), investigating and resolving variances related to pricing, quantity, and terms
• Ensure invoices are properly coded to general ledger accounts, projects, cost centers, and grants
• Review and validate supporting documentation to ensure compliance with company policies and audit standards
• Process weekly or biweekly payment runs (ACH, wire, check)
• Accurately allocate expenses to capital projects, operational projects, and grant funded initiatives
• Ensure invoice charges align with approved project budgets, funding sources, and grant agreements
• Monitor allowable vs. unallowable costs under grant regulations and funding requirements
• Support grant reporting, audits, and reconciliations, including preparation of documentation for internal and external auditors
• Coordinate with Project Managers and Grants Administrators to resolve discrepancies and ensure timely cost recognition
• Maintain strict adherence to internal controls, segregation of duties, and approval workflows
• Assist with month end, quarter end, and year end close, including accruals and AP reconciliations
• Support internal and external audits by providing detailed documentation and responding to inquiries
• Ensure compliance with GAAP and applicable grant and regulatory requirements
• Serve as a primary point of contact for vendors regarding PO related questions and payment issues
• Collaborate with Procurement/Purchasing on vendor setup, PO accuracy, and contract compliance
• Provide guidance and training to junior AP staff on PO matching, project coding, and best practices
• Identify opportunities to improve AP processes, automation, and reporting
• Perform other duties as assigned

Benefits

• generous benefits
• competitive salaries
• opportunities for professional growth and career advancement
• respectful culture
• reasonable accommodation is made to enable individuals with disabilities to perform the essential functions of their role
• annual bonuses
• paid time off
• region-specific benefits

What This Job Offers

• Job Type: Full-time
• Career Level: Senior