DWH, BI and Big Data Specialist Pentcloud – Claro Centroamérica
Processed and analyzed large volumes of telecommunications data across Central American countries, including voice traffic, SMS, mobile browsing, and customer behavior. Designed, developed, and maintained Oracle PL/SQL ETL processes to integrate new data sources into the corporate data warehouse.
Built stored procedures, functions, packages, and complex transformation and validation scripts. Optimized SQL queries for millions of records, produced SAP Business Objects reports and ad hoc queries, performed analysis with Hive and AWS Athena, and managed data-quality and production ETL incidents under Scrum using Jira.