Compose Multiplatform Mobile Developer (iOS & Android)

Compose Multiplatform Mobile Developer (iOS & Android)

Project Type: Fixed-price contract Budget: $500-$1,000 (based on experience) Experience Required: Minimum 2 years in mobile development

About the Project: We're building a high-performance mobile application using Compose Multiplatform that shares both UI and business logic across iOS and Android platforms. The project follows modern MVI architecture with production-ready patterns and requires handling high-load scenarios with optimal performance.

Technology Stack (Must Have Experience With):

Core Technologies:

• Kotlin 2.2+ (essential)
• Kotlin Multiplatform Mobile (KMM/KMP)
• Compose Multiplatform 1.9+ for shared UI
• MVI Architecture (Model-View-Intent pattern)
• Orbit-MVI for state management
• Koin for dependency injection

UI & Navigation:

• Jetpack Navigation Compose with type-safe routes
• Material Design 3 components
• Coil for image loading
• Adaptive UI for different screen sizes

Networking & Data:

• Ktor Client 3.x for networking
• Kotlinx Serialization for JSON parsing
• Room Database with SQLite for persistence
• DataStore for preferences management

Async & Reactive Programming:

• Kotlin Coroutines and Flow

Platform-Specific:

• Understanding of expect/actual pattern for platform differences
• iOS: Darwin engine for Ktor, iOS-specific implementations
• Android: OkHttp engine, Android-specific features

Key Responsibilities:

• Develop features following strict MVI architecture pattern
• Implement shared UI components using Compose Multiplatform
• Optimize application performance for high-load scenarios
• Handle platform-specific implementations using expect/actual
• Implement proper state management with Orbit-MVI
• Write clean, testable, and well-documented code
• Ensure consistent user experience across iOS and Android
• Test applications on both platforms under various load conditions

Required Technical Skills:

• Kotlin (2+ years of experience)
• Compose Multiplatform and Compose UI
• MVI/MVVM architecture patterns
• Orbit-MVI or similar state management libraries
• Koin or other DI frameworks (Dagger/Hilt knowledge is plus)
• Ktor Client for networking
• Room Database for local persistence
• Kotlin Coroutines and Flow (must be proficient)
• Kotlinx Serialization for JSON handling
• Understanding of expect/actual declarations
• Git version control and Git Flow
• Performance optimization and profiling
• Memory management and leak prevention
• Asynchronous programming best practices

Architecture Requirements:

• Deep understanding of MVI pattern (State, Action, SideEffect)
• Experience with Orbit-MVI or similar libraries (MVI Kotlin, RxJava MVI)
• SOLID principles and clean architecture
• Feature-based module organization
• Separation of concerns (ViewModel, UI, State)
• Error handling patterns with sealed interfaces
• Navigation patterns with type-safe routes

Code Quality Standards:

• Following DRY, KISS, YAGNI principles
• Proper use of Kotlin features (sealed classes/interfaces, data classes, value classes)
• Understanding of code complexity (Big-O analysis)
• Experience with code reviews and best practices

Nice to Have:

• Experience with Jetpack Navigation Compose
• Knowledge of Coil image loading library
• Experience with DataStore or SharedPreferences
• Understanding of Compose recomposition optimization
• Previous KMP projects in portfolio with high-load requirements
• Experience with Chucker or similar debugging tools
• Knowledge of Yandex MapKit or other map SDKs
• CI/CD setup for multiplatform projects
• Experience with automated testing (Unit, Integration, UI tests)
• Background in database optimization (Room, SQLite)

To Apply: Please provide:

Compose Multiplatform portfolio - share GitHub links or project examples

MVI/MVVM experience - describe your architecture approach

Technology stack familiarity - rate your experience (1-5) with:

• Kotlin Multiplatform
• Compose Multiplatform
• Orbit-MVI or similar state management
• Ktor Client

Code sample (optional but preferred) - show us your coding style

Interview Process:

• Portfolio review
• Technical discussion about architecture and patterns
• Code review
• Final discussion about project timeline and approach