Accounting and Systems Assistant

Accounting & Systems Assistant

MendenFreiman, LLP is seeking an Accounting & Systems Assistant who shares our commitment to providing exceptional client service and delivering high-quality legal support. We are looking for a bright, organized, dependable, and motivated professional who thrives in a collaborative environment, values meaningful challenges, and builds relationships grounded in trust and reliability.

This in-office position works closely with the Director of Accounting & Finance and the Billing & Systems Manager to support the firm's accounting operations, financial administration, practice management systems, and billing functions. The ideal candidate is highly detail-oriented, organized, and technologically proficient, with an interest in both accounting and legal practice management.

Successful candidates will take pride in providing exceptional internal and client service while demonstrating professionalism, accuracy, accountability, and a commitment to operational excellence. This role offers an excellent opportunity to develop expertise in law firm accounting, financial reporting, billing, and systems administration while contributing to the firm's continued success.

Key Responsibilities

Accounting & Finance Responsibilities

• Support accounts payable functions, including processing vendor invoices and certified charges
• Enter daily cash receipts into Centerbase, Firm's practice management software
• Perform initial reconciliation of office credit card transactions
• Support the firm's collections process by monitoring accounts receivable aging, reviewing outstanding balances, maintaining collections records, preparing reports, and coordinating follow-up communications with attorneys and clients to facilitate timely payment of invoices
• Maintain accurate financial records and organized filing systems
• Provide backup support for processing, and depositing checks

Systems & Practice Management Responsibilities

• Assist with the client intake process, including matter setup, and related administrative follow-up
• Review matters in Centerbase on a weekly basis to ensure accuracy and identify necessary updates
• Review and close inactive client matters on a monthly basis
• Assist with Centerbase data maintenance, user support, troubleshooting, and system related projects
• Support data audits and maintain documentation for accounting, billing, and practice management processes

Billing

• Support the monthly billing process, including the preparation, review, and finalization of client invoices
• Serve as backup to the Billing & Systems Manager during billing cycles and attorney invoice review periods

Administrative Support

• Provide general administrative support to the Director of Accounting and Finance
• Assist with special projects and operational initiatives
• Perform general office support duties, including processing certified mail, handling post office runs, maintaining filing systems, and scanning, filing, and digitizing documents as needed

Requirements

• Bachelor's degree required
• Experience with Centerbase or similar legal practice management software strongly preferred
• 1-3 years of experience in legal billing, accounting, finance, practice management, or administrative operations within a law firm, accounting firm, financial services firm, or other professional services organization preferred
• Strong organizational, time management, and problem-solving skills
• Demonstrates initiative, reliability, and a positive, professional attitude
• Ability to prioritize competing demands and adapt in a fast-paced environment
• Proficiency with Windows-based software and Microsoft Word, Excel, and Outlook required
• Ability to handle confidential and sensitive information with discretion and professionalism
• Strong proficiency in Microsoft 365 applications, particularly Excel, including the ability to create, maintain, and analyze spreadsheets and financial data

What Success Looks Like

• Maintains a high level of accuracy and attention to detail in all financial and administrative tasks
• Demonstrates reliability, accountability, and strong follow-through
• Exhibits curiosity and aptitude for learning practice management systems, reporting tools, billing applications, and technology platforms
• Communicates professionally and collaborates effectively with attorneys, staff, clients, and vendors
• Takes initiative to identify issues and recommend solutions
• Manages competing priorities while meeting deadlines in a fast-paced environment
• Contributes positively to the firm's culture of teamwork, client service, and operational excellence

About MendenFreiman

MendenFreiman is a boutique private wealth and business law firm trusted by high-net-worth individuals, business owners, and families for more than two decades. Our team is known for combining deep technical insight with practical, solutions-driven counsel across business formation, succession planning, commercial real estate, tax planning, and complex transactions.

We pride ourselves on a collaborative culture where attorneys and staff work closely together to deliver thoughtful, high-impact results. We emphasize consistency, accountability, and teamwork in how we serve clients and support one another across the firm.

If you're looking to build your career with a firm respected for its expertise and values, MendenFreiman offers a place to thrive.

Please note that we will not be working with external recruiters for this search.

Benefits & Total Rewards

We offer a comprehensive benefits package designed to support both your professional growth and personal well-being. Benefits for this role include: Competitive base salary and bonus opportunity, comprehensive day-one benefits, medical, dental and vision coverage, retirement plan with company match, generous paid time off, employee assistance resources, and a modern Class A office environment.