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Senior Kotlin Android Developer (Freelance, Remote) at SPACE44. Remote Location: European Union. Company Overview. At SPACE44, we empower tech startups and innovative companies across the US and Europe by delivering top-tier software engineers and comprehensive HR solutions. Unlike traditional staffing agencies, we accelerate innovation by providing performant hiring pipelines, efficient onboarding processes, performance management, and administrative assistance as an end-to-end service. Our unique approach ensures precise integration and high team performance in full-remote, nearshore, and offshore settings.. We enhance your work-life balance by offering opportunities that align your personal and professional aspirations. Work remotely to seamlessly integrate your career with your lifestyle and bring everything into a flow. We offer you a dynamic and supportive environment where you can develop and grow. Join a forward-thinking team that values the joy of work, openness, and cross-cultural collaboration. At SPACE44, let's shape the future of modern work together.. Who We Are Looking For?. We are seeking a Senior Kotlin Android Developer to build high-performance mobile applications with modern architecture and seamless user experiences. The ideal candidate has deep expertise in Kotlin, Android SDK, and modern development patterns. The ideal candidate is pragmatic, self-managed, and available to collaborate during US Pacific Time (PT) hours.. Key Responsibilities:. Build native Android applications using Kotlin and Android SDK. Implement MVVM architecture with Android Architecture Components. Develop UIs with Jetpack Compose and Material Design. Integrate REST APIs using Retrofit and handle JSON with Gson/Moshi. Implement local storage with Room database. Optimize app performance, memory usage, and battery consumption. Handle push notifications, background services, and offline functionality. Write unit tests and UI tests for code reliability. Manage Google Play Store releases and app deployment. Required Technical Stack:. Kotlin. - Expert level (5+ years). Android SDK. - Advanced knowledge of components and lifecycle. Android Studio. - Proficient with IDE and debugging tools. MVVM Architecture. - Experience with ViewModel, LiveData, DataBinding. Jetpack Compose. - Modern UI development. Material Design. - UI/UX implementation. Retrofit. - API integration and networking. Room Database. - Local data persistence. Gson/Moshi. - JSON parsing and serialization. Git. - Version control and collaborative workflows. Gradle. - Build system and dependency management. Google Play Console. - App publishing and release management. Experience Requirements:. Minimum 5+ years of professional Android development. Proven experience with production apps on Google Play Store. Strong understanding of Android app lifecycle and memory management. Experience with app performance optimization and debugging. BSc in Computer Science, Engineering, or related field. Nice to Have:. Coroutines/Flow. - Asynchronous programming. Dagger/Hilt. - Dependency injection. Firebase. - Authentication, Firestore, Cloud Messaging. RxJava. - Reactive programming. CI/CD. - Automated testing and deployment pipelines. Security. - Mobile app security best practices. Embark on your SPACE44 journey with a few simple steps:. Hireflix Chat (20 min):. Share how you work and what matters most to you. HR Sync (45 min):. Connect your experience with our goals. Psychometric Insight:. Take a 1-hour assessment exploring your strengths and working style. Benefits. Flexible Work Schedule:. Enjoy a non-linear workday designed to enhance productivity and maintain a harmonious work-life balance, with core hours for team collaboration.. Professional Growth: . Access advanced training opportunities in data science and machine learning to boost your career prospects.. Innovative Projects and Tools:. Engage in cutting-edge projects using the latest tools and technologies within a progressive remote work environment.. Competitive Income:. Receive a competitive income with regular performance reviews and potential raises every six months.. Global Team Dynamics: . Collaborate with a diverse, international team that values openness and teamwork.