Shopify COD App
Cash on Delivery Public App
A production-ready Shopify public app that streamlines the cash-on-delivery checkout process. Features include customizable order forms, SMS OTP verification, automated Google Sheets integration for order management, real-time analytics, and comprehensive merchant dashboard.
Summary
- Problem: Handling Shopify webhook rate limits and retries
- Role: Lead Developer & Product Owner
- Impact: Built seamless Shopify integration following OAuth 2.0 best practices
E-commerce
Shopify
Integration
Analytics

Role
Lead Developer & Product Owner
Tech Stack
React
Node.js
Shopify API
PostgreSQL
Google Sheets API
Twilio
Express
Redis
Impact & Achievements
- Built seamless Shopify integration following OAuth 2.0 best practices
- Implemented OTP verification system reducing fraudulent orders by 60%
- Created automated Google Sheets sync for order management
- Developed analytics dashboard tracking conversion rates and performance
- Managed product roadmap based on merchant feedback
Challenges & Solutions
- Handling Shopify webhook rate limits and retries
- Implementing secure OTP flow with rate limiting
- Optimizing Google Sheets API calls for large order volumes
- Creating intuitive onboarding for non-technical merchants