Harshita worked on the google/nomulus repository, focusing on enhancing SSL certificate validation error messaging within the Java backend. She implemented a feature that delivers precise, exception-based error messages when SSL certificates are invalid, improving user feedback and reducing support inquiries. Her approach involved strengthening the validation flow by introducing targeted unit and integration tests, particularly for certificate validity period errors. Leveraging her skills in API development, backend development, and security, Harshita ensured that the new messaging system provides actionable information for both users and incident triage. The work demonstrated thoughtful attention to robust testing and maintainable error handling practices.