I will build shopify custom app and api integration, webhooks and custom backend

C
collinsjames800
C
collinsjames800
Collins
build shopify custom app and api integration, webhooks and custom backend
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build shopify custom app and api integration, webhooks and custom backend

About this gig

Need Shopify connected to another platform, API, or custom backend?


I build reliable Shopify API integrations, GraphQL connections, webhooks, custom apps, and backend workflows for ecommerce businesses and SaaS platforms.


I can help with:

  • Shopify API development
  • Shopify GraphQL API integration
  • Shopify webhook setup
  • Custom Shopify app functionality
  • Third-party API integration
  • REST API connections
  • Backend data synchronization
  • Product, order, inventory and customer data workflows
  • API authentication and secure access
  • Webhook event processing
  • API debugging and integration fixes
  • Ecommerce automation


I focus on clean implementation, reliable data flow, validation, error handling, testing, and maintainable backend code.


Typical integrations include: Shopify CRM, ERP, fulfillment systems, payment platforms, inventory systems, SaaS applications, databases, and other external APIs.


If your API documentation is ready, send it with your requirements and I'll review the integration scope before starting.

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Localization
    • Performance
    • Security

  • Programming language

    • JavaScript

  • Frontend framework

    • Angular
    • AngularJS
    • Backbone.js
    • Ember.js
    • Foundation

  • Backend framework

    • Django
    • Laravel
    • CakePHP
    • CodeIgniter
    • FastAPI

Get to know Collins

Collins

Custom APIs, Seamless Integrations, Reliable Backend Systems

  • FromUnited Kingdom
  • Member sinceDec 2025

  • Languages

    English
I’m a backend and API developer specializing in Node.js, REST APIs, custom integrations, and automation. I build reliable solutions that connect websites, SaaS platforms, Shopify, WooCommerce, WordPress, Stripe, supplier systems, and third-party services. From custom API development and webhooks to product data feeds, backend systems, and API troubleshooting, I focus on solving the technical problems behind your workflow not just writing code. If you have an API, integration, or backend challenge, I can help turn it into a clean, practical, and maintainable solution

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