During April 2025, Cross Man focused on backend maintenance for the spring-projects/spring-boot repository, addressing reliability in health checks. He enhanced the SSL health indicator by introducing a null safety check for the sslInfo parameter within the SslHealthIndicator constructor, using Java and Spring Boot. This defensive programming approach prevented potential NullPointerExceptions during application startup, reducing the risk of startup failures and ensuring the health endpoint’s stability. By aligning with Spring Boot best practices, Cross Man improved the robustness of the core health module. His work demonstrated attention to code quality and contributed to the overall stability of backend systems.