Michalina Szostak worked on the Nawigacja-SGGW/webapp repository, focusing on enhancing the application's localization by updating English and Polish translation files. She applied internationalization and localization best practices to refine user-facing UI text, ensuring consistency and accessibility across both language interfaces. Using JSON for translation file management, Michalina established a maintainable workflow that supports future updates and reduces the risk of UI text drift. Her work did not involve bug fixes but contributed to the overall stability of the web application. The depth of her contribution lies in standardizing translation resources and improving the maintainability of locale-specific UI elements.