Worked on end-to-end Greek localization for the CollaboraOnline/online Android app and its app store descriptions, achieving full coverage of all user interface strings. Updated Greek translations for the OrganicMaps/website project, ensuring consistency and accuracy across web content. Leveraged PO files and translation management tools to streamline the localization workflow, validating changes for both mobile and web platforms. Focused on improving accessibility and discoverability for Greek-speaking users, the work enhanced user experience and reduced the localization backlog. Demonstrated skills in localization and translation, collaborating across repositories to maintain high-quality, maintainable language support within both Android and web environments.