Staff Accountant: Internal Accounting & Finance

Gross Mendelsohn, one of the Mid-Atlantic’s leading independent CPA and advisory firms, is seeking a highly organized, detail-oriented Staff Accountant to join our Internal Accounting & Finance Department.

This is NOT a client-facing or billable role. This is a critical internal position responsible for supporting the firm’s financial operations, including accounts receivable, accounts payable, collections support, payment processing, reconciliations, billing support, and related internal accounting activities.

As the firm continues to grow and modernize its internal infrastructure, systems, and reporting processes, this role will work closely with the Controller and internal leadership to help ensure the accuracy, timeliness, efficiency, and control of core accounting processes. The ideal candidate will be comfortable working in a professional services environment, handling confidential financial information, and supporting partners, professionals, vendors, and internal stakeholders with a high level of responsiveness and professionalism.

• Manage the firm’s accounts receivable process and monitor outstanding receivable balances
• Process client payments, including ACH, portal payments, checks, and wires
• Apply payments accurately within firm client and accounting systems
• Monitor aging reports and coordinate with partners and engagement teams regarding outstanding balances
• Support the firm’s collections process by tracking receivables, coordinating internal follow‑up, and assisting with timely resolution of outstanding balances
• Maintain accurate AR records and assist in resolving billing or payment discrepancies
• Record daily receipts and assist with bank reconciliation processes
• Follow established documentation standards and internal control procedures related to client receipts and payment application

• Process vendor invoices and ensure accurate coding, documentation, and approval prior to payment
• Maintain vendor records, documentation, and related payment information
• Prepare and process vendor payments, including ACH, check, and electronic payments
• Ensure vendor payments are made accurately, timely, and in accordance with firm policies and approval workflows
• Respond to vendor inquiries regarding payment status
• Assist with tracking recurring expenses, subscriptions, and other ongoing vendor commitments
• Support internal controls over vendor setup, invoice approval, payment processing and accounting documentation

• Support the setup and maintenance of client accounts across firm systems
• Assist service lines with billing, invoicing, and related administrative support
• Process updates and adjustments to client records in response to partner, engagement team, and operational needs
• Assist with accounting system updates, process changes, and related transition activities as the firm modernizes its internal finance platform
• Help maintain accurate client, billing, and payment records across applicable firm systems

• Assist with bank reconciliations and financial account reconciliations
• Support month‑end and year‑end accounting processes
• Maintain accurate documentation for accounting records and transactions
• Assist with financial reporting and ad hoc requests from the Controller
• Support internal accounting process improvements and documentation
• Assist in maintaining strong internal controls over receipts, disbursements, vendor records, and accounting documentation
• Support the continued modernization of the firm’s internal accounting processes, systems, reporting, and documentation

• Work closely with the Controller and internal leadership to maintain financial accuracy and timely accounting processes
• Coordinate with partners, engagement teams, and internal departments regarding receivables, payments, billing matters, and accounting inquiries
• Provide timely, professional, and accurate responses to internal and vendor inquiries
• Support internal accounting initiatives, process improvements, and documentation efforts
• Handle confidential financial, client, vendor, and firm information with discretion and professionalism
• Perform other duties as assigned