I’m building a lightweight, no-risk trading platform where users can practise buying and selling equities with virtual cash. The core experience should feel familiar to anyone who has tried Zerodha Kite or Upstox, yet everything must remain strictly in “paper” mode so beginners can learn without financial exposure. Scope of the build • Front-end: React (web) plus a companion Android build, ideally powered by React Native for shared logic. • Back-end: Either Node.js (Express, Nest, etc.) or Python (FastAPI, Django REST) — choose the stack you’re most productive with. • Database: PostgreSQL. Essential features • Secure Email-and-Password authentication. • Real-time stock feed displayed on a clean dashboard. I haven’t locked in a data provider yet, so advise me on the most reliable free or low-cost API. • Instant buy/sell simulation that debits or credits a virtual wallet. • Portfolio view with running P&L, position history, and basic candlestick/line charts. • Responsive design for web and a polished Android APK with identical functionality. Deliverables 1. Complete source code in a private Git repository. 2. Deployed web app (Heroku, AWS, or similar) plus signed Android build. 3. Setup & README so I can reproduce the environment and add new symbols later. Acceptance criteria • Trades settle instantly and persist in PostgreSQL. • Dashboard refreshes live prices without manual reloads. • Authentication flow is protected against common exploits (rate limiting, hashed passwords, etc.). • UI remains fast and intuitive across desktop and modern Android devices. If this sounds like your kind of project, let’s discuss timelines and any API suggestions you have for live market data.