Worked on enhancing testing and migration template quality for Spanner-related projects, focusing on backend reliability and developer workflows. In the GoogleCloudPlatform/spanner-migration-tool repository, updated Go linting workflows and added detailed documentation for local integration testing, supporting newer Go versions and improving development consistency. In GoogleCloudPlatform/DataflowTemplates, implemented integration tests to validate the handling of IDENTITY columns in Spanner migration templates, covering bulk, live, and reverse migration flows. Leveraged Go, Java, and SQL to expand test coverage and validation, enabling safer migrations and faster feedback cycles. Prioritized documentation and testing to strengthen reliability and streamline future development efforts.