kotlin-specialist

Kotlin coroutines enable structured concurrency through suspend functions and scopes, managing async work with deterministic lifecycle and cancellation. Use launch for fire-and-forget tasks and async for results, always within a coroutine scope to ensure proper cleanup.

Kotlin Multiplatform (KMP) lets you write shared business logic once and reuse it across Android, iOS, and JVM targets. Platform-specific code is isolated in expect/actual declarations, maximizing code reuse while preserving native capabilities.

Flow provides cold, structured, and cancellation-aware reactive streams in Kotlin. It integrates seamlessly with coroutines, allowing you to transform and combine async data without blocking, with automatic resource cleanup on cancellation.

Kotlin DSLs leverage lambda receivers, extension functions, and scope functions to create expressive, compiler-checked APIs. This pattern enables fluent builders for configuration and UI hierarchies with full type safety and IDE support.

Jetpack Compose integrates naturally with Kotlin coroutines and Flow for reactive state. Use suspend functions in event handlers and collect Flow emissions to update composable state, maintaining structural concurrency throughout the UI layer.

Ktor is a lightweight, coroutine-native server framework that shares type definitions and validation logic with Kotlin Multiplatform clients. This eliminates serialization mismatches and lets you define REST APIs as DSLs with full reusability across platforms.