Michal Dabrowski worked on stabilizing the Hermes build and runtime environment, focusing on cross-platform consistency and batch processing reliability. In the allegro/hermes repository, he upgraded the Gradle and Java runtime and updated the Dockerfile to ensure builds succeeded reliably across M4 machines and various hardware architectures. He addressed concurrency issues by implementing proper handling of InterruptedException in batch consumers, restoring the interrupted status and improving error visibility. Using Java and Docker, Michal’s work reduced CI build failures and improved feedback loops, resulting in more stable deployments. His contributions demonstrated depth in backend development, concurrency, and DevOps practices.