At Citi, my expertise in data architecture and database migration has been pivotal in managing and executing the seamless upgrade of a substantial 18TB+ data warehouse. This feat was accomplished with a deep understanding of Oracle products, including advanced algorithms for statistics, compression techniques, and in-memory tables. My recent efforts are focused on establishing a strategic big data platform and data fabric driving data vision , using Apache Trino /Apache Flink. The goal is to create decoupled, maintainable solutions that propel our team towards innovation and excellence in the financial technology space.