Hudson Orbe enhanced the goldmansachs/legend-engine repository by delivering a feature that improved GraphQL SDL generation, specifically addressing the correct handling of abstract types. By refining the schema generation process in Java, Hudson ensured that abstract types are now properly recognized and processed, which reduces schema-generation errors and increases the accuracy of the resulting schema. The work included comprehensive code refactoring and the addition of targeted tests to validate the new abstract-type handling, helping to prevent future regressions. This focused engineering effort deepened the reliability of schema generation and demonstrated strong skills in GraphQL, schema design, and automated testing practices.