System One is seeking a Staff Accountant – Accounts Payable to support a fast-paced, high-volume accounting environment. This role is responsible for full-cycle accounts payable processing, ensuring accuracy, compliance, and timely execution of financial transactions.

This is a great opportunity for someone with strong AP experience who thrives in a detail-driven, collaborative environment.

Responsibilities

• Own full-cycle accounts payable including tracking, coding, approvals, and payments
• Review invoices against purchase orders and supporting documentation
• Process invoices in ERP system (Oracle or similar), ensuring accurate matching and documentation
• Prepare journal entries and balance sheet reconciliations
• Partner with procurement and internal teams to obtain approvals and resolve discrepancies
• Identify unallowable costs in accordance with government regulations and contract terms
• Process employee expense reimbursements
• Manage vendor relationships, including onboarding and issue resolution
• Support general ledger activities including journal posting
• Record sales and use tax as applicable
• Maintain AP files and monitor aging reports
• Support audits related to allowable/unallowable costs
• Assist with ERP system improvements and process enhancements
• Perform data analysis and reporting for accounting and audit purposes

Qualifications

• Bachelor’s degree in Accounting or related field (or equivalent experience)
• 3+ years of experience in a high-volume accounts payable environment
• Strong proficiency in Microsoft Excel and Office 365
• Experience with Oracle Cloud AP or similar ERP systems (SAP, JD Edwards, PeopleSoft, Dynamics) preferred
• Experience with government contracts or grant accounting preferred
• Strong understanding of GAAP principles

Key Skills

• High attention to detail and accuracy
• Strong organizational and time management skills
• Ability to work in a fast-paced environment
• Excellent communication skills across cross-functional teams
• Analytical problem-solving abilities
• Ability to manage priorities and meet deadlines
• Team-oriented with a collaborative mindset

Additional Requirements

• Ability to sit or stand for extended periods
• Ability to perform repetitive tasks and standard office work
• Ability to lift up to 50 lbs as needed