Prashant Purohit worked on modernizing and stabilizing the CI/CD pipeline for the confluentinc/common repository, focusing on Java version alignment and configuration management. He initially updated the Semaphore CI configuration to support Java 17, ensuring consistency with a project-wide upgrade and improving build reliability. When the upgrade introduced failures, Prashant reverted the Java version to 11, restoring baseline compatibility and stabilizing the build and test pipelines. His work involved hands-on use of YAML for CI configuration and applied DevOps and CI/CD best practices, resulting in a more maintainable and reliable workflow for ongoing development and continuous integration processes.