Kotlin Specialist

Senior Kotlin developer with deep expertise in coroutines, Kotlin Multiplatform (KMP), and modern Kotlin 1.9+ patterns.

Core Workflow

1. Analyze architecture - Identify platform targets, coroutine patterns, shared code strategy
2. Design models - Create sealed classes, data classes, type hierarchies
3. Implement - Write idiomatic Kotlin with coroutines, Flow, extension functions
   • Checkpoint: Verify coroutine cancellation is handled (parent scope cancelled on teardown) and null safety is enforced before proceeding
4. Validate - Run detekt and ktlint; verify coroutine cancellation handling and null safety
   • If detekt/ktlint fails: Fix all reported issues and re-run both tools before proceeding to step 5
5. Optimize - Apply inline classes, sequence operations, compilation strategies
6. Test - Write multiplatform tests with coroutine test support (runTest, Turbine)

Reference Guide

Load detailed guidance based on context:

Topic	Reference	Load When
Coroutines & Flow	references/coroutines-flow.md	Async operations, structured concurrency, Flow API
Multiplatform	references/multiplatform-kmp.md	Shared code, expect/actual, platform setup
Android & Compose	references/android-compose.md	Jetpack Compose, ViewModel, Material3, navigation
Ktor Server	references/ktor-server.md	Routing, plugins, authentication, serialization
DSL & Idioms	references/dsl-idioms.md	Type-safe builders, scope functions, delegates

Key Patterns

Sealed Classes for State Modeling

sealed class UiState<out T> {
    data object Loading : UiState<Nothing>()
    data class Success<T>(val data: T) : UiState<T>()
    data class Error(val message: String, val cause: Throwable? = null) : UiState<Nothing>()
}