Online store with complete business logic

A simple online store without user registration. The main value of the work is the complete implementation of all necessary business logic without ready-made libraries. There are functions for managing products, tracking payments, automatic generation of shipping documents, managing employees (logistics, managers, admins), keeping inventory records in warehouses, and conducting promotions/sales.

Frontend: React TS + Tailwind (for the admin panel).
Backend: Node.js (TypeScript) + PostgreSQL.

Cost: 50,000 UAH