At AGS · American Gaming Systems, I managed U.S. customer accounts and prepared revenue-share invoices, accounts receivable reports, and reconciliations. By reconciling contract terms and billing classifications, I identified approximately USD $55,000 in previously unbilled revenue.
At Mercado Libre, I handled invoicing requests for Marketplace and Mercado Pago customers, resolved CFDI discrepancies, and supported billing recovery after system incidents. I also developed a 45-page Billing Workshop covering CFDI criteria, reconciliation procedures, fiscal requirements, and customer billing workflows.
At Amazon Advertising, I processed electronic invoices and coordinated CFDIs, XML files, and purchase orders. I also helped document procedures during the transition from paper-based invoice packages to digital workflows.
