Serve as the primary liaison between outside counsel, attorneys, accounts payable teams, billing system vendors, and internal stakeholders to resolve billing issues, troubleshoot system and payment concerns, enforce compliance with billing guidelines, and ensure timely payment processing. Review, audit, route, approve, adjust, or reject high volumes of outside counsel invoices in accordance with legal billing guidelines, while managing invoice aging, accruals, work-in-progress records, and end-to-end invoice lifecycle activities.