Worked on the stremio/stremio-web repository to deliver a localization-ready User Authentication System, focusing on enhancing the login and signup experience for a global audience. The approach involved replacing hardcoded error messages with translation function calls, enabling dynamic multilingual support for authentication error feedback. This established the foundation for broader internationalization across the web client, reducing language barriers and supporting future global expansion. The work was implemented using React and JavaScript, leveraging front end development best practices to align with product goals of improving user experience and reducing support load through clearer, localized feedback in authentication flows. No bugs were fixed.