Worked on the th-ch/youtube-music repository to deliver full Ukrainian localization across both the global app and YouTube Music, achieving 100% translation coverage for 477 strings. Focused on front end development and i18n, the work included implementing new UI features such as a clock display option and a Chinese character conversion menu, enhancing accessibility for Ukrainian-speaking users and expanding functionality. Leveraged JSON for managing translation data and used Weblate to centralize and streamline the localization workflow, ensuring traceable progress and easier future updates. No bugs were reported, with efforts concentrated on improving localization reliability and user experience throughout the application.