Worked on improving localization quality and stability in the aws-mwaa/upstream-to-airflow repository, focusing on front end development and internationalization. Addressed a key bug in the Korean localization by refining spacing around colons in the components.json file, which enhanced readability and ensured UI consistency for Korean users. Applied i18n best practices and collaborated closely with another contributor to maintain correct formatting and commit standards. Utilized JSON for localization data management and participated in code reviews to support maintainability. The work resulted in a cleaner localized user interface, reduced the risk of spacing-related UI issues, and streamlined future internationalization efforts.