snowflake , Backend Testing, Performance Tuning, Data Warehousing Concepts, Informatica, Azure Synapse, Query Optimization, Python, BigQuery, Test Automation Tools, Redshift, Sql, Data lakes, Airflow, Aggregations, dbt, ETL ELT pipelines, Snowflake schemas, Complex joins, Window functions, DevOps practices, Lakehouse architectures, Data QA ETL Testing, CI CD pipelines, Microsoft Fabric