Worked on the better-auth/better-auth repository to implement cross-tab session synchronization, addressing the challenge of maintaining consistent session state when users operate multiple browser tabs. Developed a client-side feature using TypeScript and front end development techniques that broadcasts session updates, such as sign-out and user changes, across all open tabs. This approach resolved issues with desynchronized session data, reducing user confusion and improving the overall experience. The work was delivered through focused, well-documented commits and included co-authored contributions. Demonstrated full stack development skills by ensuring seamless session management and enhancing business value through improved reliability in multi-tab environments.