Worked on the ChilliCream/graphql-platform repository to enhance the reliability of resolver metadata handling in a C# and GraphQL backend environment. Focused on resolving a critical issue where parent-required metadata was not correctly applied to resolvers declared on interface types, restoring proper metadata propagation and ensuring inherited resolvers preserved their requirements. Introduced new methods for defining field requirements and expanded test coverage to validate the correct projection of required columns. These improvements addressed query correctness and maintainability, enabling safer schema evolution and reducing runtime errors. The work demonstrated a methodical approach to backend development and robust testing practices within the project.