Leonardo Marinho

I’m a data professional who works across the full data lifecycle, from extraction to the consumption layer. I build efficient, scalable ETL/ELT pipelines and analytics solutions that translate raw data into strategic insights and measurable process optimization.

In my current Data Engineer role at Zygon Adtech, I architected an end-to-end ELT pipeline on Google BigQuery and led data modeling with dbt—bringing versioning, governance, automated testing, and documentation into production. I’ve also automated previously manual ingestion workflows (cutting operational time by 60%) and reduced monthly cloud infrastructure costs by ~85% through orchestration migration, while keeping performance and resilience strong.

Previously, as a BI Analyst at Oneway Data, I delivered Power BI dashboards across business areas by building ingestion, validation, transformation, and dimensional modeling. I optimized report performance with refactoring and DAX, reducing load times by 30%, and improved analytical throughput by restructuring databases to cut SQL query execution time by 60%. Outside pure analytics, I’ve developed a strong operational mindset from long-term sound engineering work—treating complex systems with extreme attention to detail, clear priorities, and reliable delivery under pressure.