Worked on the facebook/fbthrift repository to address a stability issue in the Controller Monitoring path, focusing on backend reliability using C++. Delivered a targeted bug fix that prevents division-by-zero errors in QPS calculations, ensuring that monitoring logic remains robust under high load. This defensive programming approach improved the accuracy of production metrics and reduced the risk of runtime errors and misleading dashboards. By associating the change with a specific commit, the work enhanced traceability and observability for operations teams. The contribution demonstrates attention to detail in backend development and a commitment to maintaining reliable, production-grade monitoring infrastructure.