Individual skill

kotlin-specialist

Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server setup, and type-safe DSL design. Use when building Kotlin applications requiring coroutines, multiplatform development, or Android with Compose. Invoke for Flow API, KMP projects, Ktor servers, DSL design, sealed classes, suspend function, Android Kotlin, Kotlin Multiplatform.

skills/kotlin-specialist/SKILL.md

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Last checked: Nov 9, 2026

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Repository stars (not skill ratings): 12,336
Repository last updated: Nov 11, 2026
License: MIT

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SKILL.mdcore · 6,111 bytes
references/android-compose.mddoc · 9,758 bytes
references/coroutines-flow.mddoc · 6,695 bytes
references/dsl-idioms.mddoc · 9,764 bytes
references/ktor-server.mddoc · 11,491 bytes
references/multiplatform-kmp.mddoc · 8,674 bytes

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# 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)