During April 2025, this developer focused on modernizing the build environments for the woowacourse/spring-roomescape-admin, -member, and -waiting repositories. They upgraded each project’s toolchain to Gradle 8.13, JDK 21, and Spring Boot 3.4.4, aligning with current Java ecosystem standards. Their work emphasized build environment management and dependency management, ensuring improved security, compatibility, and developer productivity. By standardizing the build and runtime stack across multiple modules, they reduced technical debt and streamlined onboarding and maintenance. The updates, implemented using Java and Gradle, addressed long-term maintainability and positioned the codebases for easier adoption of future Java features.