Assistant Office Manager (Law Firm Experience)

Company: SourcePro Search
Location: New York City
Posted on: April 2, 2026

Job Description:

Assistant Office Manager Location: Midtown NYC (Hybrid – 3 Days In-Office) Salary: Up to $90,000 Industry: Law Firm SourcePro Search is partnering with a respected and energetic mid-size law firm in Midtown Manhattan to find a sharp, detail-oriented Assistant Office Manager . This is an excellent opportunity for someone with a strong foundation in law firm billing, AP/AR , and office operations who’s ready to step into a key leadership support role. The right candidate is organized, proactive, flexible , and capable of juggling priorities while keeping a calm, professional demeanor. This role offers a collaborative hybrid schedule and an opportunity to truly grow with a firm that values both structure and innovation. What You’ll Do: Support the Office Manager and Managing Partners with high-level administrative and operational tasks Handle monthly billing , including posting client expenses in Timeslips and QuickBooks, and preparing LEDES1998-compliant client bills Manage accounts payable, receivable, collections, deposits, and trust fund accounts Communicate directly with vendors and monitor invoice status and resolution Oversee expense reimbursements and assist with payroll coordination Help coordinate HR and benefits administration , and support onboarding and training of new hires Maintain proper file management systems using FileVine and assist with general office support Generate regular administrative reporting for firm leadership What You’ll Bring: 3–5 years of law firm or professional services office administration experience Prior hands-on experience with billing, AP, AR, and collections Tech-savvy with strong proficiency in QuickBooks, Timeslips, Outlook, Word, and Excel Ability to juggle multiple responsibilities , work independently, and remain composed under pressure Excellent written and verbal communication skills A team-oriented mindset with a respectful and professional approach when working with all levels of staff and leadership Discretion and trustworthiness in handling confidential data Experience with FileVine , HR , or benefits is a plus If you're seeking a growth-oriented support role in a fast-paced, highly collaborative legal environment, this opportunity could be the perfect fit. Apply today through SourcePro Search to be considered for this exciting role! https://sourceprosearch.com/

Keywords: SourcePro Search, Edison , Assistant Office Manager (Law Firm Experience), Accounting, Auditing , New York City, New Jersey