<p>Led development of OppTy v1.0 across the full stack, from the React and React Native front-ends to the Node.js services behind them, and shipped it from Figma wireframe through to app store release.</p><p> Led OppTy v2.0 from start to finish, including the redesigned React setup, the React Native mobile app, and backend updates, and shipped it to production on both the Apple App Store and Google Play.</p><p> Integrated LLM-powered chatbot and AI chat assistant features (ChatGPT-style) into the product, wiring the model API through the Node.js backend to the React and React Native front-ends.</p><p> Used Claude Code to level up my workflow, writing high-quality tests, running CI/CD, and applying code-review strategies, along with Claude skills for repeatable tasks.</p><p> Built REST APIs and event-driven services in Node.js with Redis and RabbitMQ, containerised with Docker, streaming real-time data over Socket.io to the live dashboards.</p><p> Built data-heavy screens that render those live feeds and manage server state with TanStack Query, kept smooth with memoization and list virtualisation.</p><p> Wrote a typed, reusable component library with documentation so the rest of the team could build features in parallel.</p><p> Handled the security side, including JWT, OAuth 2.0, role-based access, input validation, and fixing issues flagged in security testing.</p><p> Designed and ran the AWS architecture for the web and React Native (Expo) apps, using S3, Lambda, and EventBridge for event-driven jobs, along with CI/CD, Firebase auth, push notifications, and over-the-air updates.</p>
