Alekseii P.

Senior Flutter developer — 5+ years in Flutter, 10+ in mobile. Fintech, real-time and decentralized apps shipped to the App Store and Google Play. Flutter is what I do full time. I also write the native iOS layer myself, so when a project needs platform channels, a custom plugin, FFI or a Swift/Objective-C integration, nothing stalls waiting for a second developer — the Dart code, the native bridge and the release on both stores are one person's job. What I take on: • New Flutter apps from MVP to store release — architecture, state management (Bloc), navigation, CI/CD, submission • Existing Flutter codebases that grew faster than their structure — Clean Architecture, SOLID, test coverage, performance • Flutter beyond phones — web (WASM), macOS and desktop from the same codebase • Native bridges — platform channels, FFI, custom plugins, Swift and Objective-C • Secure and offline-first apps — end-to-end encryption, local databases, background sync Recent work: • Private Notes (Nostr) — my own app, Flutter on iOS, Android, macOS and web. End-to-end encrypted notes and password manager (NIP-44), offline-first SQLite (Drift), secp256k1 via FFI on mobile and WASM on web. Live on the App Store and Google Play; source open on GitHub. • Decentralized social platform (Flutter) — relay-based architecture with real-time data sync, refactored for scalability. • MATS Training Platform (Flutter) — sports training app on both stores, 10K+ installs. • MBANK / MBusiness — banking apps built to high security and reliability requirements, 5M+ and 500K+ installs on Android. Tech stack Flutter & Dart: Bloc, RxDart, GoRouter, AutoRoute, Drift/SQLite, Hive, Realm, Dio, Retrofit, FFI, WASM, Melos, Firebase Native iOS: Swift, Objective-C, UIKit, Combine, RxSwift, CoreData, WebRTC Architecture & quality: Clean Architecture, SOLID, GRASP, TDD, unit and widget tests Integration: REST, GraphQL, WebSockets, push notifications Delivery: GitHub Actions, Fastlane, App Store Connect, Google Play Console Open source: di_storage (Dart) and DiStorage (Swift) — lightweight dependency injection libraries I maintain. Background: PhD in Radiophysics. I came to mobile from numerical modelling in C/C++, which is where the habit of settling the architecture before writing the feature comes from. Tell me what you are building and I will tell you honestly whether I am the right fit.