Xoibit Exchange App
A production Flutter client for a crypto exchange: spot and futures trading, P2P, wallet and fiat flows on iOS and Android.
- Role
- Flutter developer
- Period
- 2025 – Present
- Status
- live
- Stack
- FlutterDartBLoCGraphQLFirebase Cloud Messaging
- lines of Dart
- 117k
- commits since Dec 2025
- 190+
- futures positions load, down from 2–3 s
- 0.5–1 s
Problem
Traders need fast, reliable screens over live market data, and the app has to meet store and security requirements for a financial product.
Approach
I work inside a large BLoC and GraphQL codebase as one of its most active contributors since December 2025. My work covers the futures position UI and share card, wallet deposit, withdrawal and history flows, P2P ad verification, biometric app lock, dev and prod flavors and a structured logger, plus performance work on the trading screens.