Assistant Office Manager; Law Firm
Listed on 2026-02-06
-
Administrative/Clerical
Business Administration, Administrative Management -
Management
Business Administration, Administrative Management
Location: New York
Assistant Office Manager
Location: Midtown NYC (Hybrid – 3 Days In-Office)
Salary: Up to $90,000
Industry: Law Firm
Source Pro 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.
- Support the Office Manager and Managing Partners with high-level administrative and operational tasks
- Handle monthly billing
, including posting client expenses in Timeslips and Quick Books, and preparing LEDES
1998-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 File Vine and assist with general office support
- Generate regular administrative reporting for firm leadership
- 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 Quick Books, 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 File Vine
, 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 Source Pro Search to be considered for this exciting role!
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