During September 2025, Alex contributed to the spring-projects/spring-boot repository by addressing a critical issue with archive signature file generation for WAR and Uber JAR deployments on Oracle Java 17. He refactored BootArchiveSupport and BootZipCopyAction to ensure signature files are written only when signed libraries are actually present, replacing a previous hardcoded flag approach. This change improved the reliability of archive verification and reduced deployment failures and false negatives. Alex applied his expertise in Java development, Gradle, and software packaging to enhance compatibility with Java 17, demonstrating a focused and in-depth approach to maintaining robust build and deployment workflows.