Account Receivable - (Hybrid)

About AssistRx AssistRx is a leading healthcare technology company that helps life sciences organizations launch and scale patient access programs. Our platform connects manufacturers, pharmacies, providers, and patients through configurable, compliant, and data-driven solutions that support therapy initiation, affordability, and ongoing patient support. We operate in a high-growth, private-equity-backed environment where accuracy, accountability, and execution matter. Our teams work across complex client contracts, evolving billing models, and high-volume financial workflows—making attention to detail and strong cross-functional collaboration essential. At AssistRx, you’ll work alongside experienced professionals in Finance, Operations, Technology, and Account Management, supporting mission-critical programs for some of the largest pharmaceutical manufacturers in the world. We value ownership, transparency, continuous improvement, and people who take pride in getting the details right. About the Role The Billing Specialist (Accounts Receivable) plays a critical role in ensuring accurate, timely, and compliant billing and cash application across AssistRx’s client base. This position is heavily focused on end-to-end Accounts Receivable ownership , including invoicing, payment application, collections support, reconciliations, and cross-functional coordination. The ideal candidate is highly detail-oriented, comfortable working with complex billing structures and contracts , and experienced in managing AR in a fast-paced, multi-department environment. Key Responsibilities Accounts Receivable & Cash Application Prepare and reconcile daily bank deposits , ensuring accuracy and proper documentation Apply customer payments to outstanding invoices in a timely and accurate manner Maintain and actively manage Accounts Receivable aging , identifying past-due balances and discrepancies Support collections efforts through customer correspondence and follow-ups as directed Billing & Invoicing Prepare, issue, and reconcile customer invoices , including complex, multi-level billing arrangements Work with purchase orders (POs) , ensuring billing aligns with contracted amounts and remaining balances Review contracts to ensure billing accuracy across varying pricing models and service levels Maintain complete and organized billing and AR documentation Reconciliations, Reporting & Support Reconcile customer accounts and resolve billing discrepancies Retrieve and review credit reports; assist with customer credit evaluations as needed Support Account Management by providing detailed invoicing, payment status, and AR reporting Assist with client forecasts and accruals , ensuring revenue and receivables are accurately represented Collaborate closely with Finance, Sales, Account Management, and Operations teams Additional Duties Assist with AR-related projects and process improvements Ensure compliance with internal controls and accounting best practices Perform other duties as assigned by management