Own end-to-end customer billing, including invoice generation, validation, and delivery across multiple currencies. Manage monthly billing cycles for subscription and usage-based invoicing. Submit invoices through customer AP portals and ensure timely and accurate invoice distribution. Maintain billing schedules, contract updates, and customer details in NetSuite SuiteBilling. Respond to customer billing inquiries and resolve discrepancies or disputes efficiently. Partner with Sales and Customer Success on billing setup, changes, renewals, and customer communication. Monitor AR aging and proactively manage collections activities. Conduct weekly AR aging reviews and identify trends or risks. Utilize automated dunning processes and conduct direct outreach when necessary. Communicate with customers regarding overdue balances, remittances, and payment plans. Support month-end close activities related to AR and bad debt considerations. Analyze billing and collections data to identify discrepancies or opportunities for process improvement. Reconcile billing data between NetSuite, Salesforce, and internal systems. Validate usage data, billing logic, and usage-based charges. Maintain accurate customer, contract, and billing master data across systems. Provide documentation and support for internal audits and financial reporting needs. Work extensively with NetSuite SuiteBilling and ARM, Salesforce, and Excel/Sheets. Support enhancements to quote-to-cash workflows and system integrations. Take ownership of scheduled and off-cycle bill runs, including invoices for newly closed deals.