Worked on the Kotlin/kotlinx.coroutines repository to enhance the stability and build-safety of coroutine sharing in Android environments. Addressed a critical bug by introducing ProGuard and R8 keep rules, ensuring that the 'job' garbage collection anchor in ReadonlySharedFlow and ReadonlyStateFlow is preserved during code minification. This technical approach prevented premature garbage collection of shared coroutine anchors, maintaining reliable lifecycle management even under aggressive optimization. Leveraged expertise in Kotlin, Android development, and coroutine patterns to deliver a targeted fix that directly improved the robustness of shared coroutine behavior in minified builds, with all changes linked to relevant internal lifecycle issues.