Scalable Crypto Algo Trading SaaS

I need a cloud-hosted, multi-tenant platform that lets end-users deploy automated cryptocurrency trading algorithms against live market feeds with millisecond responsiveness. The system must pull real-time data and push orders to international brokers and exchanges such as Binance, Delta and Vantage.

Core functionality
• Strategy engine able to run user-supplied algorithms on spot and derivatives markets
• Low-latency market data stream visible on a web dashboard in charts and tables
• Credit and debit card checkout for subscription plans, handled through a PCI-compliant gateway
• Secure account layer that covers authentication (2FA preferred), editable user profiles and a complete transaction history per client
• Horizontal scalability so new regions and high-volume sessions can be added without downtime

Deliverables
1. Front-end dashboard (desktop and responsive mobile) showing bot status, live PnL, order book and balance snapshots
2. Back-end services for strategy execution, broker connectivity and payment processing, exposed through REST or GraphQL APIs
3. Connectors for Binance, Delta and Vantage that handle order placement, updates and cancellations with proper error handling and rate-limit respect
4. Admin panel for plan creation, user management and system health metrics
5. CI/CD scripts and infrastructure templates that let me deploy to AWS, GCP or a comparable cloud in one click
6. Developer-level documentation and a brief video walkthrough proving successful trade execution on a test account

Acceptance criteria
• A test algorithm can be created, deployed and modified by different users concurrently
• Live price updates arrive in the UI with less than 300 ms end-to-end latency under load of 1 000 active bots
• Subscription purchase flows from card entry to webhook confirmation complete in under 8 s and record correctly in the user’s history
• All endpoints covered by unit and integration tests with 90 %+ coverage

If you have experience with high-frequency trading systems, microservices, WebSocket streaming and PCI-compliant payment integrations, your approach outline will help me assess fit quickly.