Ecommerce Platform
A multi-tenant e-commerce platform powering five branded storefronts with automated order fulfillment, multi-gateway payments, and real-time analytics.
The Problem
Running multiple e-commerce brands typically means maintaining separate codebases, payment integrations, and fulfillment systems for each. This creates operational overhead that scales linearly with every new storefront. I needed an architecture where new brands could launch with minimal configuration while sharing infrastructure, payment processing, and automated fulfillment-without any data leaking between tenants.
The Solution
A unified platform that runs five independent storefronts from a single codebase. Each brand has its own domain, styling, and pricing, but shares the backend infrastructure. Orders flow through a payment orchestration layer supporting 8+ gateways-cards, cryptocurrency, Apple Pay, and regional processors-with built-in fraud screening. Once paid, a background worker automatically routes orders to the appropriate fulfillment provider, monitors delivery progress, and handles errors without manual intervention. An analytics dashboard tracks revenue, customer behavior, and high-value customer segments across all properties.
How It Works
- 1 Multi-Tenant Architecture: Every request includes a site identifier. JWT tokens encode tenant context, and all queries filter by site-complete data isolation on shared infrastructure.
- 2 Payment Orchestration: Customers see a simple checkout; the system selects the optimal gateway based on payment method, location, and risk signals. Fraud screening blocks temporary emails and high-risk patterns before processing.
- 3 Automated Fulfillment: A background daemon picks up paid orders, submits to provider APIs, tracks progress, and handles partial deliveries or failures automatically.
- 4 Email Automation: Abandoned cart sequences, re-engagement campaigns, and transactional emails run continuously across all storefronts with site-specific branding.
Tech Stack
- Backend: Python, Flask, SQLAlchemy, Gunicorn
- Frontend: Vue 3, TypeScript, Tailwind CSS
- Database: MySQL
- Payments: Stripe, PayPal, Cryptomus, NOWPayments, Cardinity, Solidgate, CatalystPay
- Background Processing: Custom worker daemons
- Email: Brevo API
- Monitoring: Statistical anomaly detection, Telegram/Discord alerts
- Infrastructure: Nginx, Hetzner VPS
Results
- $5M+ in revenue processed
- 300,000+ orders fulfilled automatically
- 5 storefronts running on shared infrastructure
- 8+ payment gateways with cryptocurrency support
- Sub-5-minute order-to-fulfillment latency
- Real-time fraud detection with statistical anomaly monitoring