DWH BI Consultant
Integrated into the Data & Business Intelligence department of a major Algerian telecommunications operator to modernize enterprise reporting and analytics pipeline. Developed and maintained ETL pipelines using Informatica, SAS, and PostgreSQL to extract, transform, and integrate large-scale enterprise data. Designed and maintained enterprise data models, semantic layers, and reporting datasets supporting business intelligence initiatives. Created SAP BusinessObjects Universes and semantic layers delivering KPI dashboards and actionable business insights. Optimized complex SQL queries handling large volumes of telecommunications data, improving reporting performance and scalability. Ensured data quality through validation, reconciliation, and data governance. Partnered with Marketing, Finance, B2B, Strategy, and IT teams to translate business requirements into scalable reporting and analytics solutions. Technical environment: PostgreSQL, Oracle PL/SQL, Hive, Impala, Informatica, SAS Enterprise Guide, SAP BusinessObjects, SQL