Financial TechnologyProject: A leading neobank application providing seamless digital banking experiences. The project involves over 10 Android developers, as well as iOS developers, team leads, tech leads, a CTO, and a comprehensive management structure. I lead feature teams (mission teams) to deliver key functionalities aligned with business objectives.Stack: Kotlin, MVI, Dagger2, Realm, Coroutines, Retrofit, Custom navigation, FastlaneResponsibilities:- Mission lead, responsible for mobile delivery, architectural decisions, and stakeholder demos.- Conducted comprehensive app security reviews, implemented preference encryption, SSL-pinning, mTLS encryption, and resolved common vulnerabilities, ensuring robust security.- Designed and executed a phased migration plan, overhauling project architecture for improved scalability and performance.Financial TechnologyProject: A cryptocurrency trading application enabling secure and efficient crypto transactions. The team consisted of 4 Android developers alongside iOS counterparts. Served as both Team Lead and Tech Lead, driving technical excellence and team collaboration.Stack: Kotlin, Compose, MVI, Ktor, Hilt, Room, coroutines, Bitrise CI/CD, Retrofit, WebSockets, Firebase AnalyticsResponsibilities:- Android Team/Tech Lead. Customer communications, estimations, and delivery planning.- Defined technical vision and strategy for the Android team, aligning with product and business goals.E-CommerceProject: A private enterprise app designed for a major European retail chain, used internally by staff for warehouse inventory management, barcode scanning, and location tracking.Stack: Kotlin, MVVM, Dagger2, Retrofit, Navigation Component, ZXing Library, Room, GlideResponsibilities:- Designed and implemented a modular architecture to facilitate feature expansion and maintenance.- Delivered core features such as advanced barcode scanning, inventory search, and real-time location tracking.

Digital Entertainment and Media ProSiebenSat.1 Project: A live-streaming and entertainment platform for ProSiebenSat.1, providing personalized and interactive experiences to millions of users. The app featured advanced video streaming capabilities and seamless integration with entertainment services.Stack: Kotlin, MVVM, Koin, Retrofit, GraphQL, JUnit, ExoPlayer, Firebase Analytics, Glide, OkHttp, Room, Android Jetpack (ViewModel, Paging)Responsibilities:- Implemented user engagement features, such as personalized recommendations and watchlist synchronization.- Collaborated with UI/UX designers to create a visually appealing and intuitive user interface.- Automated regression testing using JUnit, reducing manual testing effort by 50%.- Analyzed crash reports and user feedback to prioritize bug fixes and feature enhancements.

Communication and social networkingProject: A large-scale messenger application inspired by Signal, focusing on secure communication through end-to-end encryption and a clean, user-friendly interface.Stack: Java, MVP, Moxy, RxJava, Clean Architecture, Firebase Cloud Messaging, Retrofit, Glide, ProGuard, Custom Views, Vector Drawables, Support LibrariesResponsibilities:- Enhanced app performance by introducing efficient background synchronization mechanisms.Collaborated with backend teams to ensure consistent data handling across multiple platforms.- Contributed to project planning by providing realistic estimations for feature development and delivery timelines.- Designed and optimized user interface components for compatibility with lower Android versions, ensuring seamless functionality down to Android 4.x.