Accounts Payable Specialist – High-Volume & Compliance

Serco; Suitland (MD); On-site; USD 52,000 - 64,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) plan with employer matching

Tuition reimbursement

Paid time off

Job summary

Serco Inc. in Herndon, VA is seeking an Accounts Payable Administrator to review, validate, and process vendor invoices in AP systems, ensuring timely payments and adherence to internal controls.

You will support EFT/ACH, wire, and check payments, assist with month-end close, and respond to vendor inquiries while maintaining organized records. A strong collaboration with Finance, Procurement, and Operations is essential.

Qualifications

• U.S. Citizenship required
• High School Diploma/GED
• Minimum 3 years of Accounts Payable experience, preferably supporting high-volume invoice processing in a US Federal Contracting environment
• Advanced knowledge of invoice processing, payment processing, and three-way match concepts
• Minimum 2 years’ experience supporting EFT/ACH, wire, and check payment processes
• Proficiency with Microsoft Excel, Outlook, and Word
• Strong written and verbal communication skills
• Ability to manage multiple priorities and meet established deadlines
• Ability to work collaboratively as part of a team across Finance, Procurement, Operations, and vendor organizations
• Ability to work in Herndon, VA corporate office one day per week

Responsibilities

• Review, validate, and process vendor invoices accurately and timely in AP systems.
• Verify invoice approvals, supporting documentation, purchase orders, and account coding prior to processing.
• Support EFT, ACH, wire, and check payment processing activities, ensuring compliance with internal controls and payment schedules.
• Assist with vendor payment inquiries and issue resolution.
• Monitor invoice queues and aging reports to ensure payment terms are met and discounts are captured when applicable.
• Research and resolve invoice discrepancies by coordinating with Procurement, Program Finance, Accounting, and vendors.
• Assist with month-end close activities, account reconciliations, and reporting as assigned.
• Support internal and external audit requests by providing documentation and payment support.
• Maintain organized electronic records and documentation in accordance with company retention requirements.
• Provide excellent customer service and timely responses to inquiries from vendors and internal stakeholders.
• Identify opportunities to improve AP processes, efficiency, and controls.
• Perform other duties as assigned.

Skills

Excel

Outlook

Word

Communication skills

Team collaboration

Multi-priority management

Education

High school diploma or GED

Associate’s degree in accounting or related field

Tools

Deltek Costpoint AP

Hyland OnBase

Job description

Serco Inc. in Herndon, VA is seeking an Accounts Payable Administrator to review, validate, and process vendor invoices in AP systems, ensuring timely payments and adherence to internal controls.

You will support EFT/ACH, wire, and check payments, assist with month-end close, and respond to vendor inquiries while maintaining organized records. A strong collaboration with Finance, Procurement, and Operations is essential.