Cross Platform Code Sharing Questions

Design and engineering strategies for sharing code and logic across multiple native platforms such as iOS and Android. Topics include what to share versus what to keep platform specific, sharing business logic, utilities, data models, and when to reuse user interface components. Common approaches and frameworks include Kotlin Multiplatform Mobile, React Native, Flutter, and Compose Multiplatform. Candidates should be able to discuss architectural choices, trade offs in performance and native look and feel, techniques for bridging to platform APIs, build and release implications, dependency and version alignment across platforms, repository and monorepo versus polyrepo organization, team responsibilities for shared layers, testing implications for shared code, and strategies for gradual migration or platform specific override. Also include considerations for continuous integration pipelines, packaging, native module management, feature flagging, and monitoring instrumentation across multiple runtimes.