Worked on stabilizing the core JSON deserialization process for ExchangeSession within the c9s/bbgo repository, focusing on backend development using Go. Addressed a critical bug that caused infinite recursion during JSON unmarshalling by introducing a type alias, which prevented stack overflow and ensured correct parsing of session data. This targeted fix improved runtime reliability and reduced the risk of production crashes, laying a safer foundation for future enhancements. No new features were released during this period, as efforts centered on code health and maintaining robust data handling. Collaborated effectively to deliver a solution that strengthens the backend’s stability and maintainability.