Worked on the spring-projects/spring-boot repository to enhance the reliability of JSON serialization by addressing boundary conditions in the JsonValueWriter component. Focused on developing targeted unit tests in Java to verify correct handling of maximum nesting depth for both JSON objects and arrays, thereby reducing the risk of runtime failures in production environments. Applied software testing best practices to expand coverage for edge cases, ensuring safer defaults when nesting limits are reached. Maintained clear traceability to related issues through detailed commit messages and sign-offs, supporting maintainability and future code reviews while contributing to the overall robustness of the codebase.