Mario L.

I help companies turn multiple data sources into valuable insights. With a graduate degree in Intelligent Decision Support Systems, I specialize in data modeling, dashboards, and data integration for industries including marketing, retail, finance, healthcare, and insurance. Throughout my career, I have built BI systems that enable performance measurement, customer analysis, and operational optimization. Proudly using Ralph Kimball’s data warehousing methodology and strong SQL skills, I design tailored dimensional models that make reporting efficient and insightful. My technical toolkit includes Power BI and Qlik Sense for interactive dashboards, Azure SQL and SSIS for robust ETL pipelines, and solid data architecture foundations for scalable solutions. I work closely with stakeholders to translate business goals into data-driven solutions that support strategic decisions and measurable business growth. Key Technical Expertise • BI & Visualization: Power BI, Qlik Sense, Looker, Metabase, Sisense • Data Modeling & ETL: Ralph Kimball Methodology, dbt, Azure Data Factory, SSIS, Alteryx, Fivetran • Databases & Warehousing: Snowflake, Google BigQuery, Azure SQL, AWS Redshift, Oracle, PostgreSQL • Languages: SQL (Expert), Python • Cloud Platforms: Azure, GCP, AWS