Accounts Receivable & Accounts Payable Specialist

ARCCA, LLC, an ATS Family of Companies, is a growing national forensic, scientific, and engineering firm with six offices nationwide located in Penns Park, PA (suburban Philadelphia);
Pittsburgh, PA;
Chicago, IL;
Hollywood, FL;
Oakland, CA; and Seattle, WA. Since 1987, ARCCA has assisted thousands of clients in addressing technical and scientific challenges while supporting litigation needs. The company’s experienced and credentialed professionals provide services in Forensic Engineering, Expert Witness Testimony, Sports Biomechanics and Human Performance, and Research, Development, Testing, and Evaluation. The quality of this work has established ARCCA as a trusted partner for insurance companies, law firms, government agencies, and corporate safety, claims, and risk management departments.

Applied Technical Services, LLC (ATS) is a leading provider of critical testing, inspection, certification, and compliance services. ATS serves clients across a diverse set of large and stable end markets including manufacturing, power generation, aerospace, medical, and defense. ATS was founded in 1967 and is headquartered in Marietta, GA. Today the company employs nearly 2,100 team members in over 95 locations across the United States.

Together, ARCCA and ATS advance a shared mission to create a safe and reliable world through precise technical and professional services.

Job Title:

Accounts Receivable & Accounts Payable Specialist We are seeking a detail-oriented Accounts Receivable & Accounts Payable Specialist to support our day-to-day financial operations. This role plays a critical part in maintaining healthy cash flow, building strong customer and vendor relationships, and ensuring the accurate and timely processing of billing and payment activities.

The ideal candidate is organized, service-oriented, and thrives in a fast-paced, deadline-driven environment. You enjoy researching discrepancies, solving problems, and communicating professionally with customers, vendors, and colleagues. You bring a high level of accuracy, attention to detail, and sound judgment when handling confidential financial information, while embracing continuous improvement and new technologies that enhance efficiency and effectiveness.

Responsibilities Accounts Receivable Prepare and distribute customer invoices accurately and on time.

Apply customer payments, including ACH, wire transfers, checks, and other payment methods.

Communicate with customers regarding invoices, payment status, commitments, short payments, and account inquiries.

Research and resolve billing discrepancies, unapplied cash, over payments, and other customer account issues.

Process approved credit memos, account adjustments, refunds, and write-offs.

Maintain accurate customer records and supporting documentation.

Accounts Payable Review, code, and enter vendor invoices accurately and in a timely manner.

Match invoices to purchase orders, contracts, approvals, and supporting documentation as applicable.

Route invoices for approval and follow up on missing documentation or authorizations.

Reconcile vendor statements and resolve duplicate invoices, credits, pricing variances, and payment discrepancies.

Maintain vendor records, including W-9 forms, payment details, and contact information.

Respond professionally to vendor inquiries regarding invoices and payment status.

Additional Responsibilities Prepare account reconciliations and supporting schedules as assigned.

Maintain organized electronic records and audit-ready documentation.

Support internal and external audit requests.

Ensure compliance with company policies, internal controls, and approval procedures.

Identify and recommend opportunities to improve billing, collection, payment, and recordkeeping processes.

As…