Worked on the uber/NullAway repository, delivering a focused code quality refactor and modernization effort across core modules. Applied expertise in Java, code refactoring, and software maintenance to simplify conditional logic, modernize type handling, and standardize generic initialization, all while preserving existing functionality. Enhanced null-safety and style consistency to improve robustness and support developer productivity. The changes reduced code complexity in critical paths, making future code reviews and iterations more efficient. This work laid the foundation for upcoming quality and performance improvements, ensuring the codebase remains maintainable and adaptable for future feature development without introducing new bugs or regressions.