During March 2026, Haim Marko developed VastData S3-compatible object storage integration for the alex000kim/skypilot repository, expanding the platform’s storage options and improving user experience. He used Python to refactor credential validation, consolidating profile checks into a single helper for better maintainability. Marko enhanced error messaging and updated user-facing documentation to provide clearer guidance, while also recommending best practices for cloud setup. His work included expanding test coverage by adding VastData to smoke tests and updating cloud handling logic. This focused engineering effort improved reliability, reduced setup friction, and demonstrated depth in API development, cloud storage integration, and testing.