Cecilia Perez is an experienced billing analyst currently working as a Senior Billing Analyst at INTERBANKING S.A. since January 2018, focusing on pre-invoicing and complete billing, client management, and promotional discount applications. Prior to this role, Cecilia served in the billing department at ASCENSORES SITVER S.A. from September 2012 to January 2018, where responsibilities included general invoicing, delivery note control, and invoice dispatch to clients. Cecilia holds a degree in Administration from Universidad Abierta Interamericana, completed in October 2022, and is currently pursuing English language studies at American English Center, which began in April 2022.