I am looking for a senior Full-Stack Developer to build a custom "Command Center" Dashboard for Forex & Crypto copy trading. I do not want a standard "White Label" solution. I require a Headless Architecture where I own the Source Code and the API connection. 1. The Visual Interface (Frontend): Design: Strict "Dark Mode" Terminal UI (Reference image will be provided). Tech Stack: React.js / Next.js + Tailwind CSS. Key Widgets: Live P&L: Real-time streaming (WebSocket) for Total Capital & Floating P&L. Fleet Status: A table showing all connected "Slave" accounts with their individual Latency (ms) and connection status (Green/Red dots). Command Module: Large "Buy Call" / "Sell Put" buttons for Master execution. 2. The Logic (Backend): Tech Stack: Node.js or Python (FastAPI). Connectivity: Must connect to MetaApi.cloud (or similar enterprise API) for MT4/MT5 and Binance/Bybit API for Crypto. Critical Features: Global Kill Switch: A single panic button that triggers an immediate Close All Positions loop for 50+ slave accounts simultaneously (must handle API rate limits via queues/batching). Stealth Mode (Hidden SL): The ability to set a Stop Loss that is hidden from the broker. The backend must monitor price feeds and trigger a close signal only when the price is hit. 3. Infrastructure & Ownership: Architecture: I will provide the VPS (AWS/DigitalOcean). You must deploy the code there. Deliverables: Full Source Code (Frontend + Backend) uploaded to my GitHub. No Licensing System: The software must run without any remote "license check" or monthly subscription to you. Documentation: Setup guide for adding new Master/Slave accounts.