During April 2025, this developer enhanced the Netflix/dgs-codegen repository by centralizing hard-coded string literals into a dedicated ParserConstants class. The work focused on maintainability and code quality, using Java and Kotlin to refactor the codebase without altering existing functionality. By extracting constants and reducing duplication, the changes established a single source of truth for literals, which supports safer future refactoring and minimizes technical debt. The approach emphasized clear change traceability through well-documented commits, demonstrating skills in code refactoring and maintainability improvement. No bug fixes were required, as the primary objective was to strengthen long-term code stability and consistency.