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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
Shopify COD App

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