During November 2024, Mikko developed enhanced file handling capabilities for the Sema4AI/actions repository, focusing on attachment, upload, and retrieval workflows. Using Python, he integrated robust file management features that streamline interactions with external services, reducing operational risk and improving reliability. His work involved updating dependencies and refactoring internal logic to ensure maintainability and consistent error handling across the system. By emphasizing API integration and dependency management, Mikko delivered a solution that supports seamless file operations within the Actions module. The depth of his engineering addressed both immediate workflow needs and long-term system stability, reflecting a thoughtful technical approach.