Mobile Engineer — React Native / Expo
A fast mobile trading app for crypto and prediction markets with AI-assisted insights, live market data, interactive charts, paper trading, risk controls, strategy review, and performance monitoring.
“Built an Expo/React Native trading client that balances fast multi-market access with AI decision support, simulation, persistent state, secure storage, and disciplined risk tooling.”
Active traders often split research, market monitoring, simulation, risk controls, and execution across different tools, making it harder to move quickly without losing discipline or context.
Built a unified Expo/React Native experience that brings crypto and prediction markets together with live data, AI-assisted decision support, paper trading, charting, risk controls, strategy review, and portfolio performance tracking.
Expo Router provides file-based navigation across market discovery, instrument detail, charts, paper trading, strategy, risk, and account areas. Redux Toolkit with persisted state coordinates watchlists, session data, preferences, simulated portfolios, and performance context. Axios-backed API clients deliver market and decision-support data; Secure Store protects sensitive local values; WebView supports specialized embedded experiences; Reanimated and Gesture Handler maintain responsive data-heavy interactions.
TapTrade helps traders move from market observation to structured decisions in one mobile workspace. It supports both crypto and prediction markets while keeping practice, risk, and performance context close to every trade.
The application is built with Expo 54, React Native 0.81, TypeScript, Expo Router, Redux Toolkit, React Redux, Redux Persist, Axios, Secure Store, WebView, Reanimated, Gesture Handler, and Expo Updates. Feature-oriented routes and shared API/state layers support fast iteration across data-heavy screens.
Published on the App Store by Boingo LLC for iPhone and iPad with iOS 15.1+ support.
Impact
Production App Store release unifying live markets, AI-assisted analysis, paper trading, and risk controls.
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