Expert Android Consultant

Type of contract: B2B contract Salary range: 170 - 210 PLN/H What will you do? You will be part of innovative projects for one of the largest mobile banking applications in Poland. In this role, you will design and develop modern Android solutions, integrate mobile applications with backend systems, and contribute to building secure, scalable and high-quality software used by millions of users. Your tasks Develop and maintain Android applications using Kotlin and Java Design and implement new mobile features Integrate applications with backend services Write unit and integration tests Ensure high code quality, security and performance Participate in CI/CD processes and application releases Collaborate with cross-functional teams in an agile environment Your skills At least 3 years of commercial experience in Android development with Kotlin Strong knowledge of Android SDK, Android Studio, AndroidX and Material Components Experience with MVVM, Clean Architecture and multi-module applications Good knowledge of RxJava3 and Kotlin Coroutines Experience with LiveData, Flow and StateFlow Experience with REST/SOAP integrations using Retrofit and OkHttp Knowledge of Firebase, Room, WorkManager and Android Architecture Components Experience with unit and integration testing using JUnit, Mockito, MockK or PowerMock Knowledge of Gradle, dependency management and dependency injection frameworks such as Hilt, Dagger2 or Koin Experience with CI/CD tools such as Jenkins or GitLab Knowledge of application security, secure data storage and performance optimization Fluent Polish Nice to have Experience in banking or financial services projects Experience with advanced Gradle configurations Knowledge of mobile accessibility standards