Key Architecture & Tech Stack:
• Frontend: React Router v7 & Shopify Polaris design system for a native admin experience.
• Backend: Node.js, Prisma ORM, and PostgreSQL with concurrency-safe database locks.
• Core Engine: 1-click PO generator, custom branded PDF invoices, and 30-day sales velocity stockout forecasting.
• Integration: Official Shopify GraphQL Admin API for real-time multi-location inventory syncing.
• Reliability: 118 automated tests covering end-to-end inventory workflows.