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.

Key Responsibilities

Accounts Receivable & Collections Support

• 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

Accounts Payable

• 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

Time and Billing System Support

• 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

Internal Financial Operations

• 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

Collaboration

• 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

• Bachelor’s degree in accounting, finance, business, or a related field preferred

• Equivalent professional experience in accounting, bookkeeping, finance, or internal accounting operations will also be considered

• 2-5 years of accounting, bookkeeping, finance, AR/AP, or related internal accounting experience

• Experience within an accounting firm, law firm, consulting firm, or other professional services environment preferred

• Experience with accounts receivable, accounts payable, billing support, payment processing, and reconciliations preferred

• Experience working with confidential financial, vendor, client, or business information preferred

Required Skills and Competencies

Technical Skills

• Strong understanding of basic accounting principles

• Experience with Sage 100, Microsoft Business Central, or similar accounting systems preferred

• Strong proficiency in Microsoft Office, particularly Excel

• Ability to work within multiple accounting, billing, and financial systems

• Familiarity with electronic payment processes, vendor records, client payment application, and accounting documentation preferred

Analytical & Organizational Skills

• Strong attention to detail and accuracy

• Ability to track and reconcile financial transactions

• Strong organizational and time management skills

• Ability to manage multiple priorities and meet deadlines

• Ability to identify discrepancies, ask appropriate questions, and help resolve accounting or payment issues

• Comfort working in a changing environment as systems, processes, and reporting practices continue to evolve

Professional & Interpersonal Skills

• Strong written and verbal communication skills

• Ability to interact professionally with partners, professionals, vendors, and internal stakeholders

• Strong internal client-service orientation

• Collaborative mindset and ability to work independently

• Strong problem-solving skills and initiative

• Ability to handle confidential financial and business information with discretion

• Professional judgment, reliability, and accountability in handling firm financial processes

Why Join Gross Mendelsohn?

• Be part of a respected independent CPA and advisory firm committed to strategic growth

• Support the continued modernization of the firm’s internal accounting and finance operations

• Work in a collaborative, team-oriented professional services environment

• Competitive compensation and comprehensive benefits

• Free parking at our Locust Point/McHenry Row location

• Limited hybrid flexibility available based on business needs and prior approval

Work Environment

This role operates primarily in a professional office environment. Due to the nature of payment processing, records management, vendor coordination, and internal accounting support, the position is primarily office-based, with limited hybrid flexibility available based on business needs and prior approval.

Physical Requirements

Ability to sit for extended periods, lift up to 20 pounds, and manage physical files and documentation as needed.

Join Us

If you are a detail-oriented accounting professional who enjoys supporting the internal operations of a growing professional services firm, we encourage you to apply.

Gross Mendelsohn is an equal opportunity employer

committed to fostering a respectful and inclusive workplace.

Salary : $55,000 - $78,000