Data Warehousing, ELT, Python, Spark SQL, Data Security, Data Lineage, Dimensional Modeling, Sql, Hive, Etl, Airflow, golden dataset curation, metric KPI framework design, data sampling strategies, Flink, ML data pipelines, big data architecture, agile delivery methodologies, BI tooling, data classification, data quality monitoring, training data management, Sla Management, rbac, access auditing