Joseph Orji

Built a telemedicine app from scratch with React Native and Expo, covering video consultations, in-home nurse visits, clinic appointments, provider sessions, and payment checkout. Integrated VSee ClinicKit and built DOKITA, an Anthropic-powered medical chat assistant.

Led the React Native, Expo, and TypeScript build for personalised news feeds, breaking-news stories, short and long-form video, live market data, and paginated PDF editions. Added Google Gemini summaries and offline-first delivery with TanStack Query persisted to MMKV.

Led the mobile build for an eight-chain wallet across Bitcoin, Ethereum, Solana, Tron, BNB Chain, Avalanche, Polygon, and Arbitrum. Built account-scoped secure storage, biometric and passkey controls, and reusable quote-polling hooks.

Architected the mobile app from scratch with React Native, Expo, TypeScript, NativeWind, Zustand persistence, and TanStack Query. Built Google OAuth with Firebase and SuperTokens sessions, plus a cross-platform video player.

Built the responsive React Native, TypeScript, and Expo app for a peer-to-peer equipment rental marketplace. Delivered WebSocket chat, Stripe payments, Apple Pay, Google Pay, Stripe Connect payouts, and Stripe Identity.

Led the React Native architecture for a crypto education product serving users in Nigeria, the UK, and other African markets; shipped to both mobile stores within four months. Built social authentication, cached API access, learning rewards, communities, notifications, AppsFlyer analytics, and a Web3 game.

Built mobile and web appointment products with React Native, React, Redux, TanStack Query, Socket.IO, and TypeScript, and shipped to both mobile stores through EAS. Added real-time business chat that supported onboarding more than 3,000 businesses, then introduced a subscription tier for paid features.

Led React Native and React delivery for savings, investment, and money-gifting products used by more than 10,000 customers. Implemented secure token storage, biometric and PIN access, TanStack Query caching, Redux state, production hardening, store releases, and iterative performance improvements.

Led a DeFi mobile product for buying, saving, sending, swapping, and tracking crypto; implemented complex card interfaces with React Native and Skia. Built identity verification with biometrics and government IDs, reduced crashes on low-end Android devices by 20% through Sentry and API optimisation, mentored engineers, and shipped with EAS.

Built React Native navigation for finding and sorting EV charging stations by distance, speed, and cost using live location, Google Maps, and Google Places. Integrated Stripe and Expo notifications, built an operator dashboard, onboarded 35,000 charging stations, and delivered compliant App Store and Google Play releases.

Designed and built Expo and web applications for crypto saving and investment, including live CoinGecko prices for more than 80 assets and a fundraising feature that added 1,000 users within two weeks. Improved stability and performance through stylesheet standardisation, dead-code cleanup, server and client caching, reusable components, secure wallet-address validation, and store delivery.

Designed the investment platform in Figma and built its React, Redux, React Native, and Expo applications for iOS, Android, and web.

Designed and built a membership-based business-rating platform with React, Redux, Firebase Cloud Functions, Node.js, Express.js, and Adobe XD.

Led mobile delivery with designers and a backend engineer, defining MVVM and Zustand patterns, coding standards, team tasks, and review practices. Built biometrics, two-factor authentication, wallets, bank transfers, and QR contactless payments.

Built an AI-powered spending and repayment app with React Native CLI, TypeScript, TanStack Query, social authentication, push and in-app messaging, and Reanimated transitions. Integrated Plaid for bank and card connections and Stripe for subscriptions.

Built and maintained a React Native trading app with TypeScript, Redux, TanStack Query, reusable components, Binance live prices, and a Python-based trading bot integration. Designed the product in Figma and implemented Apple subscriptions with RevenueCat.

Built the mobile application from scratch with React Native, Expo, TypeScript, Zustand with MMKV persistence, and TanStack Query. Implemented live WebRTC streaming with Dolby Millicast and integrated MT4/MT5 broker services.

Completed a Software Engineering program at Zero To Mastery Academy from 2019 to 2020.

Earned a High School Diploma in Computer Science and Information Technology from Petroleum Training Institute from 2017 to 2020.

Earned a National Diploma in Computer Science from Abia State Polytechnic from 2014 to 2016.