Krishiv Gupta focused on backend development for the twangodev/uw-coursemap repository, addressing a data integrity issue in instructor-course mappings. He refactored the aggregate_instructors logic in Python to ensure that the courses_taught attribute for each instructor stores direct course references rather than string identifiers. This change prevents misassociations and supports more accurate analytics and reporting downstream. By updating the data model and handling data structures carefully, Krishiv improved the reliability of instructor-course associations. His work, though limited to a targeted bug fix, demonstrated attention to data consistency and effective use of Python for backend data handling and code refactoring.