Over a two-month period, contributed to core infrastructure and developer tooling in open source Java projects. Delivered enhanced logging for apache/maven-surefire by propagating SLF4J context across threads, improving traceability and reducing debugging time for parallel test executions. This work leveraged Java concurrency and logging best practices to increase observability without impacting existing test results. In the HubSpot/error-prone repository, implemented a CI/CD workflow using GitHub Actions and Maven, introducing multi-JDK support and automated documentation generation. These changes streamlined release processes and improved maintainability, demonstrating a focus on reliability, developer productivity, and future-proofing through automation and robust Java development practices.