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Billing/Legal Administrator

  • Location: Concord, Massachusetts
  • Work Arrangement: Hybrid
  • Type: Part-time


Boutique law firm in historic Concord seeks a part-time Billing/Legal Administrator. Office works exclusively within the nonprofit sector, offering a wide range of legal services to founders and nonprofit clients from small, community-based organizations to those operating nationally and abroad. Great opportunity to join a collaborative team, with a great office culture, and flexible schedule options.

Hours/Schedule:  15-20 hours/week with a flexible schedule


Job Type: Direct


Location Requirements: Mainly remote, with a preference of 1day/week onsite

Rate: $30-35/hour

Job Description: The firm billing and legal administrator will update records for billing purposes, prepare and audit monthly invoices and billing records, and communicate with key stakeholders to ensure the timely delivery of payments.


  • Generate, edit, and prepare monthly invoices
  • Utilize computer skills to maintain, update, and record forms as needed
  • Interface with clients and key stakeholders (internal and external) for questions and payments and work with the firm’s bookkeeping function
  • Edit/modify client data for any account data as needed
  • Help with scanning, digital formatting, filing, and organization of client documents
  • Support technical functions like electronic document signature, website updates, and email sends 
  • Track receipts, ACH, and credit card payments and ensure prompt billing and payments
  • Perform monthly statement reconciliations and reporting



  • Experience in accounts payable, full-cycle invoicing
  • Experience with e-billing platforms
  • Knowledge of Cosmolex program or other legal billing software is a plus
  • Experience with DocuSign or other electronic signature platforms
  • Must be very tech-savvy and able to provide support and instruction to team members; experience with Squarespace a plus
  • Excellent writing and editing skills are required
  • High detail orientation and data entry experience, a plus
  • Strong organizational skills and great attention to detail; ability to deliver quality work in a quick, responsive manner


FlexProfessionals respects and seeks to empower each individual and support the diverse cultures, perspectives, skills and experiences of its candidate network. FlexProfessionals does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis covered by appropriate law. The candidates whose resumes are shared with our business clients are selected on the basis of qualifications, merit, and business need.  

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