3+ years of professional experience in Android development using Kotlin Understanding of mobile UI/UX concepts A solid understanding of modern Android frameworks including Android Jetpack components such as LiveData, ViewModel, Jetpack Compose UI and Kotlin Coroutines + familiarity with legacy patterns such as XML layouts and classic View-based UI Strong understanding of object-oriented programming (OOP), functional programming, and architectural principles and design patterns Ability to write clean, scalable, and maintainable code Experience working in a Scrum/Agile environment Experience with source control systems (Git),  CI/CD pipelines and app distribution. Experience with Firebase or other mobile-focused backend services such as Analytics, Crashlytics, Cloud Functions or Remote Config Experience with WebView Proficiency in RESTful APIs, JSON parsing, and networking in Android as well as experience with dependency injection frameworks A proactive attitude – suggesting ideas, researching solutions, and solving problems Creativity and attention to detail – always looking to improve the user experience and code quality Excellent problem-solving and analytical skills Fluent in Polish and English is a must (B1-B2 level) Experience in video streaming projects is a plus We Offer: Full remote position / hybrid work (office in Gliwice)Employment Contract or B2B. Stable working environment with a focus on long-term cooperation. Optional English or Spanish lessons. Private medical care (Luxmed). Life insurance (Allianz). Multisport membership. Birthday leave Voluntary days