Chiro Ito developed and enhanced runtime telemetry and observability features for the quarkusio/quarkus repository, focusing on Java backend development and microservices. Over two months, Chiro delivered a Java Flight Recorder (JFR) extension that captures Quarkus application runtime data, introducing new JFR events and configurable recording options. The work included SPI-based modularization of the JFR extension, enabling future extensibility and improving shutdown reliability to prevent null pointer exceptions during event emission. Chiro also addressed interception proxy handling for void methods, ensuring correct exception behavior and adding comprehensive tests. The contributions demonstrate depth in API design, build systems, and testing.