I will develop a custom shopify app or private app with API integration

H
harshbuildsapps
H
harshbuildsapps
Harsh
develop a custom shopify app or private app with API integration
Full Screen
develop a custom shopify app or private app with API integration

About this gig

Need a custom Shopify app built from scratch or third-party APIs integrated into your store?


I develop production-ready Shopify apps using React, Node.js, and the Shopify API.


What I can build for you:

  • Custom public or private Shopify apps
  • Third-party API integrations (inventory, pricing, product data)
  • Product configurators and custom tools
  • Admin dashboards for store management
  • Webhook handlers and background automation
  • Payment gateway integrations


What you get with every order:

  • Clean, well-structured source code
  • Responsive UI built with React and Tailwind CSS
  • Proper error handling and data validation
  • Testing before deployment
  • Post-delivery support for any bugs


I have hands-on experience building Shopify apps including product search tools, multi-step configurators with dynamic images, and inventory sync systems connected to external supplier APIs.


My apps are built for performance and scalability - not quick hacks that break after an update.

Every project is different. Message me with your requirements before ordering and I will recommend the right package, provide a realistic timeline, and make sure we are aligned before any work

  • Website type

    • E-Commerce store

  • Website features

    • Marketing
    • Forum
    • Customer support
    • Inventory
    • Analytics
    • Events
    • Chat
    • Membership
    • Gallery
    • Booking

  • Plugins

    • Other
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Harsh

Harsh

I Build, Fix and Optimize Web Apps

  • FromIndia
  • Member sinceMar 2026
  • Avg. response time1 hour

  • Languages

    Hindi, English
Hi, I'm Harsh, a Full-stack developer specializing in React, Next.js, Node.js, TypeScript, Shopify, Laravel and WooCommerce. I build custom web apps, Shopify apps, AI-powered chatbots (LangChain, RAG), and e-commerce solutions. I also fix bugs, optimize performance, and integrate third-party APIs. What you get: - Clean, production-grade TypeScript code - Payment integrations (Razorpay, Stripe) - REST and GraphQL API expertise - On-time delivery with clear communication Message me before ordering - I will review your requirements and provide an accurate scope and timeline.

Related tags