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Job Title: Full Stack Kotlin Engineer (Compose Multiplatform & Ktor) The Role As a Full Stack Kotlin Engineer, you will own features end-to-end. You will design the database schema, write the Ktor API endpoints, and implement the UI using Compose Multiplatform for both Android and iOS. You will be instrumental in maintaining a "Shared Business Logic" architecture. Key Responsibilities Mobile Development: Build beautiful, responsive UIs for iOS and Android using Compose Multiplatform . Backend Development: Develop and maintain scalable REST/GraphQL APIs using Ktor and Kotlin. Hardware Integration: Work with platform-specific APIs (Android SensorManager, iOS CoreMotion/HealthKit) using Kotlin Multiplatform’s expect/actual mechanism to track steps accurately. Code Sharing: Maximize code reuse (networking, domain models, validation) between the backend and mobile clients. Database: Manage database interactions using Exposed (Backend) or SQLDelight/Room (Mobile). Architecture: Implement clean architecture patterns (MVVM/MVI) and Dependency Injection (Koin). Technical Requirements Kotlin Mastery: 2+ years of experience with Kotlin. Deep understanding of Coroutines and Flows. Compose Multiplatform: Experience building UIs with Jetpack Compose and configuring it for Multiplatform (iOS & Android). Ktor (Server): Experience building backend services with Ktor, including authentication (JWT), routing, and serialization. KMP Ecosystem: Familiarity with the KMP ecosystem (Ktor Client, kotlinx.serialization, kotlinx.datetime). Mobile Native Knowledge: Basic understanding of the native Android and iOS build systems (Gradle, Xcode, CocoaPods/Swift Package Manager). SQL: Experience with PostgreSQL or similar relational databases. Nice-to-Have (Bonus Points) Experience with HealthKit (iOS) and Health Connect (Android). Experience creating widgets or WearOS / WatchOS companion apps. Knowledge of Docker and deployment on cloud providers (AWS/GCP/Heroku). Experience with SQLDelight for shared database logic. Open-source contributions to the Kotlin community.
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