Worked on the wundergraph/graphql-go-tools repository to enhance the GraphQL AST printer by implementing support for transitive interface implementations in schema output. This involved extending the AST processing logic in Go to accurately print interfaces that are indirectly implemented through other interfaces, addressing a key gap in schema correctness. The approach emphasized test-driven development, with an expanded suite of tests to verify the handling of indirect interface relationships. By improving the accuracy of AST printing, the work enabled safer downstream code generation and schema analysis, demonstrating proficiency in Go, GraphQL, code generation, and robust testing practices within a maintainable codebase.