Senior Billing Assistant
Reference Number: 404331
Posted: 07/12/2026
Job Type: Permanent
- Industry: Legal
Senior Legal Billing Specialist - Hybrid NYC, NY 95k-115k
This role requires expert-level billing experience, a deep command of Aderant Financial Systems, and a strong understanding of law firm billing requirements, including electronic billing (eBilling) protocols.
Essential Job Requirements:
Billing & eBilling:- Prepare, process, and finalize a high volume of complex client invoices using Aderant Financial Systems, ensuring accuracy, completeness, and compliance with client billing guidelines.
- Manage the full billing lifecycle from pre-bill review through final invoice submission, including narrative edits, time entry adjustments, write-offs, waivers, and reductions.
- Review and edit pre-bills for accuracy, including:
- Consistency of client/matter names and attorney names
- Prepare and submit eBills through various electronic billing platforms (e.g., Legal Tracker, Collaborati, TyMetrix, or similar), ensuring compliance with client-specific LEDES or other format requirements.
- Monitor and manage eBilling rejections and resubmissions promptly, resolving issues in coordination with billing partners and their assistants.
- Assist with monthly billing close processes, including reconciliation of time and billing records in Aderant.
Client & Matter Management:
- Serve as a primary billing contact for assigned billing partners, attorneys, and legal assistants.
- Build and maintain thorough knowledge of assigned client portfolios, rate structures, billing arrangements (flat fee, contingency, hybrid), and outside counsel guidelines (OCGs).
- Identify and flag billing issues, potential write-offs, or out-of-guideline charges proactively before invoice submission.
- Coordinate with the Accounts Receivable and Credit teams to address outstanding balances and resolve billing-related collection issues.
Systems & Process Improvement:
- Demonstrate expert-level proficiency in Aderant Expert Billing, leveraging system functionality to maximize billing efficiency.
- Identify inefficiencies in current billing workflows and recommend process improvements to the Billing Manager.
- Assist in training and mentoring junior billing staff on Aderant system functions, billing best practices, and firm billing policies.
- Contribute to the review and updating of billing procedures, policies, and the firm’s internal billing manual as needed.
Skills, Knowledge and Abilities:
- Minimum 4 years of law firm billing experience, with at least 3 years of hands-on experience using Aderant Financial Systems
- Expert-level knowledge of law firm billing processes, including eBilling submission platforms and LEDES file formats.
- Strong familiarity with outside counsel guidelines (OCGs) and client-specific billing requirements.
- Proficiency in Microsoft Office Suite
- Office Location: Roseland, NJ or New York, NY (Hybrid)
- NJ: 9:00 AM – 5:00 PM
- NY: 9:30 AM – 5:30 PM
If this is a role that interests you and you’d like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you!
About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells
ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2022 ManpowerGroup was named one of the World's Most Ethical Companies for the 13th year - all confirming our position as the brand of choice for in-demand talent.
CONSULTANT TESTIMONIAL
An Experis consultant
"Communication, instructions, expectations and follow-through were exceptional, throughout the hiring, interviewing and onboarding process. Thank you, Experis!"

