Worked on the dotnet/efcore repository to deliver configurable filesystem customization for EF Core’s SQLite provider. Developed a feature that adds support for specifying a SQLite Virtual File System (VFS) option directly in the connection string, enabling advanced deployment and testing scenarios. The implementation involved introducing a Vfs keyword in the SqliteConnectionStringBuilder and ensuring seamless integration with the underlying SQLite library. Leveraged C#, .NET, and database expertise to expose this configuration path, allowing users to tailor filesystem behavior for their applications. The work focused on enhancing flexibility and control over data access patterns without introducing breaking changes or affecting existing workflows.