Marudosurdo contributed to internationalization and localization efforts in open source projects, focusing on Japanese language support for Jellyfin and metabrainz/picard. In Jellyfin, they integrated Japanese translations into the core repository using Weblate, establishing a scalable workflow for future localization and improving onboarding for Japanese-speaking users. For metabrainz/picard, Marudosurdo translated a substantial portion of the image processing UI, again leveraging Weblate to streamline translation management. Their work, primarily in JavaScript and PO files, addressed accessibility and broadened user reach. The contributions demonstrated a methodical approach to translation, emphasizing workflow scalability and collaboration, though no direct bug fixes were recorded.