Denny Lee is a Product Management Director and Principal Developer Advocate at Databricks with deep expertise in distributed systems, AI, and data science. He is a longtime contributor to Apache Spark and MLflow and a maintainer of Unity Catalog and Delta Lake. He previously worked at Microsoft on Azure Cosmos DB, HDInsight, and SQL Server, and led data science engineering at SAP Concur. He holds a Master’s in Biomedical Informatics from OHSU and has built large-scale data platforms for healthcare and enterprise use. His technical focus includes AI, Apache Iceberg, Delta Lake, Apache Spark, ML, and genomics.