Nadeesh worked on the Guardsquare/proguard-core repository, focusing on improving the reliability of code injection for primitive array types. He refactored the CodeInjector component to update internal type representations and ensure primitive arrays were correctly managed and pushed during injection. Using Java and Kotlin, he addressed a critical bug that previously affected primitive array handling, and reinforced the solution by adding targeted unit tests for methods with primitive array arguments. This work increased regression coverage and overall correctness for array scenarios. The depth of the changes reflects careful attention to both the injection logic and the robustness of test coverage.