Worked on the Jahia/content-editor and Jahia/jcontent repositories to enhance content editing workflows and stability. Focused on robust merging of fieldset definitions and override resolution, improving the reliability of form definitions and their overrides. Delivered a new visibility conditions editor with a React-based dialog and data table, streamlining governance of content visibility. Improved the DateTime UI and header components for better readability and consistency, and fixed template resolution by leveraging OSGi bundle symbolic names. Emphasized maintainability through expanded test coverage and refactoring, using Java, JavaScript, and GraphQL to deliver stable, user-focused improvements across both backend and frontend components.