Kristian Hart reorganized the equinor/fmu-dataio codebase to improve maintainability and collaboration, focusing on consolidating common data models into a dedicated directory. Using Python and YAML, Kristian updated schema references and versioning across metadata files to align with the new structure, ensuring consistency and reducing future refactoring costs. This architectural groundwork clarified the project layout, making it easier for new contributors to onboard and for teams to coordinate changes. By decoupling components and standardizing metadata, Kristian enabled more reliable feature delivery and laid the foundation for future automation, demonstrating a thoughtful approach to software architecture and data modeling.