The Challenge
Fleet Mart needed a B2B e-commerce platform with strict order approval workflows to prevent fraudulent purchases — a significant problem with their previous system.
My Role
Backend developer responsible for:
- Laravel REST API architecture
- JWT authentication system
- Multi-tier approval workflow engine
- Razorpay payment gateway integration
Technical Highlights
Multi-Tier Approval Workflow
Designed a state-machine-based approval system:
Order Created → Manager Review → Finance Approval → Payment → Fulfilled
│ │ │
▼ ▼ ▼
Cancelled Rejected Rejected
Each tier has role-based access, email notifications, and audit logging.
Fraud Prevention
The multi-tier approval system, combined with JWT authentication and audit trails, reduced fraudulent orders by 90%.
Payment Integration
- Razorpay API for Indian payment methods (UPI, cards, netbanking)
- Webhook signature verification for payment confirmations
- Idempotent processing to prevent double charges
Key Results
- Served 500+ users on the platform
- Reduced fraud by 90% through multi-tier approvals
- Reliable payment processing via Razorpay
- Full audit trail for compliance