During March 2025, Duarte enhanced the TobikoData/sqlmesh repository by delivering configurable Snowflake connectivity, focusing on backend development and database configuration using Python. He introduced the ability to specify host and port within the SnowflakeConnectionConfig, enabling environment-specific endpoints and improving deployment flexibility. To ensure reliability, Duarte updated the command-line interface tests to cover these new configuration options, thereby increasing test coverage and supporting robust integration strategies. While no major bugs were addressed during this period, his work reduced configuration friction and improved environment parity, demonstrating a methodical approach to Python-based configuration management and Snowflake integration within the project.