Mario A. Puello M.
Etl Developer / Database Manager
Professional profile
Engineer with 12+ years of experience in engineering , IT , and telecommunications . Expert in Data Engineering , ETL , data integration , transformation , analysis , and BI tools . Skilled in Python , SQL , Java , and electronics maintenance
Work experience
Created ETL workflows with Talend and Python, integrated data from multiple sources, reverse engineered legacy processes to Python/PostgreSQL, delivered Power BI dashboards, and managed database/report access.
Major achievementOptimized and automated ETL workflows with Talend, Python (Pandas, Numpy), reducing process times by up to 400%. Developed data analytics and BI dashboards for commercial intelligence.
Loaded diverse data sources into production database with IBM DataStage, built IBM Cognos dashboards for Corficolombiana, providing insights on financial flows and asset management.
Major achievementImplemented ETL processes with IBM DataStage and SQL, built BI dashboards in IBM Cognos for financial KPIs.
Developed ETL jobs in Talend to process CSV, Excel, SAP HANA data for Salesforce CRM, based on AYESA Spain requirements.
Major achievementImplemented ETL processes with Talend Open Studio (Java 8), ingesting data into Salesforce CRM for ENEL CODENSA.
Education experience
Ucompensar | Especialización
