My Role: Full Stack Developer — Sole developer responsible for designing the system architecture, building the POS workflow, and integrating the payment gateway.
Overview
A comprehensive Point of Sale and Inventory Management System designed for small to mid-size businesses. It combines real-time stock tracking, a full checkout flow with barcode scanning, multi-method payment processing through Razorpay, and role-based dashboards — all in a responsive interface that works across desktop, tablet, and mobile.
The POS module handles the complete sales cycle: product lookup via barcode scanner, cart management, multi-payment support (cash, online, bank transfer, cheque), and professional receipt generation. Inventory management provides real-time stock levels, reorder alerts, and product CRUD with category organization.
On the backend, Express.js serves a REST API with JWT-based auth and role-based access (Admin, Manager, Salesperson). MongoDB handles data persistence with Mongoose ODM, and the ledger system tracks all financial transactions. The frontend is built with React 18, TypeScript, and Tailwind CSS, with date-fns for formatting and Lucide for iconography.
Key Highlights
Complete POS checkout flow with barcode scanner integration
Razorpay payment gateway with multi-method support
Real-time inventory sync across all connected sections
Role-based dashboards for Admin, Manager, and Salesperson
Professional receipt and invoice generation
Ledger accounting system for financial transaction tracking
Real-time notification system for stock alerts and updates
Responsive design working on desktop, tablet, and mobile
Features
- Full checkout and sales processing
- Barcode scanner integration for quick product lookup
- Cart management with quantity and pricing
- Professional receipt and invoice printing
- Multi-currency support (INR with extensible system)
- Real-time stock tracking and management
- Product CRUD with category organization
- Reorder point alerts
- Live data synchronization across sections
- Razorpay payment gateway integration
- Cash, Online, Bank Transfer, and Cheque support
- Ledger accounting for transaction tracking
- Dashboard analytics with revenue insights
- Role-based access (Admin, Manager, Salesperson)
- JWT authentication with secure sessions
- User account creation and management
Tech Stack
| Layer | Technology |
|---|---|
| Frontend | React 18 + TypeScript (Vite) |
| Styling | Tailwind CSS |
| Backend | Node.js / Express.js |
| Database | MongoDB + Mongoose |
| Authentication | JWT + Bcrypt |
| Payments | Razorpay |
| Icons | Lucide React |
| Dates | date-fns |
| Deployment | Vercel (frontend) + Railway (backend) |
Project Structure
Screenshots
