fprodev

Mobile platform of digital financial services: cryptocurrency wallet, payment infrastructure, SDK and white-label solutions. • Designed and developed the architecture of the mobile financial platform, ensuring modularity, scalability, and reuse of key components. • Developed the functionality of the cryptocurrency wallet: authorization, session management, digital asset transactions, transaction history, and account protection mechanisms. • Implemented multi-level authentication: OTP, PIN, biometrics, access recovery, and user session lifecycle. • Integrated banking services, payment providers, KYC/KYB platforms, and internal server services. • Developed Android AAR SDKs and platform integrations to integrate financial functionality into third-party mobile applications. • Developed a white-label architecture and a Product Flavors system to release multiple client applications on a single codebase. • Configured Firebase/Crashlytics/App Check, CI/CD via

Mobile platform for a major energy company: development of applications in industrial operation and new functional modules. • Developed and maintained enterprise-level Android applications with an audience of over 50,000 users. • Participated in the design of new functional module architecture and the implementation of Clean Architecture. • Integrated REST APIs, Firebase Cloud Messaging, analytics, and internal corporate server services. • Refactored key components, improved release stability, and reduced technical debt. • Analyzed production incidents, fixed critical errors, and participated in code reviews.

Educational mobile platform: 3 Flutter applications, Payments, Lessons, Analytics, Platform Channels and regular product releases. • Developed the educational platform "Vznaniya": 3 Flutter applications with a total audience of more than 200,000 users. • Designed the architecture of Flutter applications: separation of layers, a single code core, reusable widgets, navigation, product flavors, and configurations for different brands. • Developed business-critical modules: purchase of courses and subscriptions, payment statuses, authorization, API work, push notifications, analytics and user progress. • Integrated Google Play Billing, Tinkoff, Yukassa and RuStore Pay, providing stable processing of thousands of monthly payment transactions. • Implemented native integrations through Platform Channels: connected the Android/iOS SDK, handled platform events and limitations of different OS versions. • Optimized the performance of Flutter applications: reduced memory consumption, eliminated UI bottlenecks, and improved stability across devices. • Set up CI/CD, Crashlytics, monitoring and alerting; participated in refactoring and reducing technical debt without stopping product development. • Conducted code reviews, participated in the formation of the team's technical standards, and covered critical scenarios with unit, widget, and integration tests.