Kotlin Multiplatform Developer (KMP)

Quick Facts

Role: Kotlin Multiplatform Developer (KMP)
Collaboration: Hybrid mode (~1 day/week on-site)
Budget: Up to 155 PLN/h + VAT (depending on experience and scope)

Description

Design and develop cross-platform applications using Kotlin Multiplatform (KMP). You will build shared components and application logic with Kotlin, Coroutines and Flow, implement UI with Compose Multiplatform and Jetpack Compose, and apply MVI/MVVM architecture with dependency injection, API integration, and unit testing.

Responsibilities

• Design and develop multi-platform applications with Kotlin Multiplatform (KMP)
• Develop shared components and application logic using Kotlin, Coroutines, and Flow
• Implement UI interfaces using Compose Multiplatform and Jetpack Compose
• Design application architecture using the MVI/MVVM approach
• Implement dependency injection using Koin or Hilt
• Develop network communication and integrate APIs using Ktor or Retrofit
• Create and maintain unit tests with JUnit and MockK
• Configure and develop application build processes with Gradle
• Use Git for source code management
• Use AI development tools such as GitHub Copilot, Claude, or Cursor
• Collaborate with project teams to develop and optimize mobile and multiplatform solutions

Requirements

• Senior-level commercial experience in mobile or multiplatform app development (min. 5 years)
• Very good Kotlin knowledge, including asynchronous programming with Coroutines and Flow
• Practical experience with Kotlin Multiplatform (KMP) and Compose Multiplatform
• Experience building UI with Jetpack Compose
• Practical knowledge of MVI and MVVM architectural patterns
• Experience with dependency injection using Koin or Hilt
• Experience integrating services and building network communication with Ktor or Retrofit
• Ability to create unit tests using JUnit and MockK
• Practical knowledge of Gradle and Git
• Experience using AI tools that support software development (GitHub Copilot, Claude, Cursor)

Benefits

• Work on varied projects across Software, Embedded, Data, and Cloud Services
• Engagement in additional pre-sales initiatives and expert activities
• Access to medical care, a sports card, and a cafeteria platform according to collaboration rules