Worked on stabilizing user authentication flows in the LibreChat repository by addressing issues related to LDAP integration. Focused on ensuring that the system reliably uses the first email address when processing LDAP user data, which resolved login errors for users with multiple emails and reduced edge-case conflicts. The solution was implemented in Node.js and JavaScript, with comprehensive unit tests written using Jest to validate scenarios involving multiple emails, existing user conflicts, and domain restrictions. This backend development effort improved system reliability and onboarding by reducing authentication failures, ultimately enhancing maintainability and decreasing support requests related to user login issues.