Vijay Sathvik developed cross-event ticketing enhancements for the fossasia/eventyay-tickets repository, focusing on expanding multi-event ticket purchase capabilities. Using Django and Python for backend development and database management, he refined the checkout flow by improving the handling of active questions, which reduced user friction and potential conversion drops. He strengthened data validation to prevent duplicate position secrets, addressing edge cases involving duplicate tickets across events and ensuring data integrity. Collaborating closely with team members, Vijay incorporated feedback and Copilot suggestions to improve code reliability and maintainability. His work laid a scalable foundation for future ticketing features within the system.