Worked on the acemod/ACE3 repository to deliver Ukrainian language localization, focusing on internationalization and localization workflows. Over two months, added Ukrainian translation strings and integrated them into the existing language handling system, enabling native-language UI and content for Ukrainian-speaking users. Enhanced the localization pipeline to support runtime language switching and improved accessibility for a broader user base. In a subsequent update, refined and expanded Ukrainian translations to address gaps and ambiguities, aligning with localization standards and review practices. The work emphasized clean integration, traceable commits, and collaboration, using established localization techniques to strengthen future translation efforts within the project.