Contributed to the keycloak/keycloak and PicnicSupermarket/error-prone-support repositories over a two-month period, focusing on code quality, configuration, and documentation in Java. In keycloak/keycloak, addressed a documentation issue by updating Argon2 Password Hash Provider Factory configuration keys to match the codebase, reducing misconfiguration risks and improving onboarding. In PicnicSupermarket/error-prone-support, enhanced static analysis by extending LexicographicalAnnotationListing to enforce annotation ordering across all modifier declarations, including types, fields, parameters, and local variables. Leveraged Java and static analysis tools to improve maintainability and reduce future code review effort, demonstrating attention to detail and alignment between documentation and implementation.