Worked on the Nawigacja-SGGW/webapp repository to enhance localization by updating English and Polish translation files, focusing on refining user-facing UI text and ensuring consistency across both locales. Applied internationalization and localization best practices, utilizing JSON for translation file management and conducting locale-specific UI testing to verify accuracy. This effort improved accessibility for Polish users and reduced inconsistencies in interface text, while establishing a standardized workflow for future translation updates. No major bugs were addressed during this period, as application stability remained strong. The work emphasized maintainability and scalability of localization resources for ongoing and future development needs.