I will build a custom shopify app with functions and checkout extensions


About this gig
Need a custom Shopify app, not just a theme tweak? I build private (custom) Shopify apps and Shopify Functions for stores that need logic the standard admin can't do.
What I build:
- Custom (private) apps using the Admin API
- Shopify Functions: discounts, shipping and payment rules
- Checkout extensions that work with your app
- Webhooks, data sync and automation between Shopify and other tools
- Admin screens for your team (React, Polaris)
Stack: React, Remix, Node.js, GraphQL, Shopify Functions.
How it works:
1. Message me your idea and store URL.
2. I confirm what's possible, the scope and the price.
3. I build and test it on a development store.
4. I install it on your store and share the code.
For small one-off checkout changes, message me and I'll suggest the cheapest option.
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 Amar Gul
Shopify Checkout Extensions and Custom App Developer, React and Laravel
- FromPakistan
- Member sinceMay 2019
- Avg. response time1 hour
Languages
Urdu, English
My Portfolio
Other Website Development Services I Offer
FAQ
Do I need Shopify Plus?
For checkout page (info/shipping/payment) customization, yes. Thank You & Order Status extensions work on ALL Shopify plans.
Is this future-proof after the checkout.liquid deprecation?
Yes. Checkout UI Extensions are Shopify's official, supported API — unlike deprecated checkout.liquid.
Can you migrate my old checkout.liquid customizations?
Yes — migration is a specialty. Send me your current setup for a quote.
Will I own the code?
100%. Full source code and rights are transferred on delivery.
Do you handle the backend/hosting for advanced features?
Yes. I build hosted Laravel/Node backends with Admin API and app proxy (Premium package).
How is the app installed — do I need App Store approval?
No. It's installed via custom distribution — a private app for your store only.

