Katerina Сhapailo

I've built and operated scalable ETL/ELT pipelines, data warehouses, lakehouse platforms, and internal tooling for analytics and product teams for more than nine years. At Sxope, I built dbt and Airflow ELT pipelines processing approximately 400,000 records daily, optimized partitioned and clustered BigQuery schemas, and introduced data-quality controls that resulted in zero critical incidents over six months. I also defined data contracts and helped deliver a lakehouse architecture and self-service dashboards. At Tinkoff Bank, I developed Python web applications and RESTful services using Flask, FastAPI, and SQLAlchemy, while building Airflow workflows and a multi-source ingestion library for self-service analytics. Earlier at GlowByte Consulting, I migrated an enterprise DWH from SAS to Greenplum, built financial-reporting ELT pipelines handling over one million records weekly, and reduced batch-processing downtime by about 30%.