Lotta Gardin worked on the fisma-benefit-app/benefit-app repository, focusing on authentication reliability and user interface improvements. She implemented a robust logout feature in React and TypeScript, introducing token validation and expiration handling to prevent logout loops and ensure secure session termination. Her work addressed edge cases involving invalid or expired JWTs, enhancing the overall authentication flow. Additionally, Lotta refined the UI by improving header formatting and clarifying button wording, while also adding Finnish localization for functional components. These changes improved accessibility and usability for Finnish-speaking users, demonstrating depth in front end development and attention to localization requirements.