At AVAL FIDUCIARIA, I designed data integration for eight heterogeneous sources and developed ETL processes with Python and Power Query. I implemented a dimensional model using SCD Type 2 and helped reduce daily Python ETL processing from 48 hours to one.
I deployed 12 BI solutions used by 400 active users and led advanced analysis to identify clients whose operating costs exceeded their revenue. Earlier, at OXXO COLOMBIA and ADECCO COLOMBIA, I developed executive dashboards and automated payroll validators.
