At Libertex Group, I develop and validate DWH/BI pipelines and analytical datasets, tracing data issues from source systems through transformations to reporting layers. I build dbt models, T-SQL transformations, and automated reconciliation checks that improve data correctness and reliability.
I've reduced incremental pipeline execution from about 55 minutes to a few minutes through SQL and transformation optimization. I also support Airflow workflows, including incremental loads, reruns, historical processing, and backfills, while reviewing dbt, Python, and T-SQL changes for performance and integrity.
Previously, I optimized telecom ETL workflows at ER-Telecom Holding, reducing OLAP cube load time by 30%, and delivered a greenfield corporate DWH and BI migration at JSCB Kapitalbank. My work spans SQL, Python, Oracle, MS SQL Server, dbt, Apache Airflow, and end-to-end data quality investigations.
