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$
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I will build shopify custom app private app checkout extensions graphql functions remix
Cardon
About this gig
Need a powerful Shopify custom app, private app, or public app built to 2026 standards?
You're in the right place.
I build full-stack Shopify apps using GraphQL Admin API, Shopify Functions, Remix framework, Checkout UI Extensions, App Bridge and Polaris web components. From private apps to public App Store launches and Built for Shopify certification.
I deliver clean, secure, scalable code.
Shopify Custom App & Private App Development
Checkout UI Extensions & Shopify Functions
GraphQL Admin API & Storefront API
Remix Framework, React & Polaris Web Components
Admin Extensions & App Bridge IntegrationB2B App, Wholesale Portal & Subscription App
Webhook, ERP, CRM & Node.js Integration
Built for Shopify Certification Ready
Shopify App Store Submission Support
Every app is built to Shopify's 2026 standards: OAuth 2.0, GraphQL-first architecture, Polaris compliance.
Stop paying for generic apps that do 60% of what you need. Get a bespoke solution built exactly for your business.
Message me before ordering to discuss your project. Let's build something exceptional.
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 Cardon
Cardon
Helping Serious Brands Achieve Serious Results
- FromNigeria
- Member sinceMar 2026
- Avg. response time2 hours
Languages
English, Spanish, French, German
Imagine landing on a Shopify store that feels effortless… clean design, smooth navigation and a checkout experience so seamless you don’t even think twice before buying.
Now think about this, most stores don’t fail because of bad products… they fail because the experience isn’t built to convert.
That’s where I come in. I design and develop high-converting Shopify stores, from dropshipping setups to full custom builds, with a strong focus on CRO. My goal isn’t just to make your store look good, it’s to make it sell better.
Every decision I make is focused on one thing — results.
My Portfolio
FAQ
What information do you need before starting my Shopify app?
I need a clear description of what your app should do, your Shopify store URL, whether it's a private or public app, any third-party tools it needs to connect with, and your preferred timeline. The more detail you provide upfront, the faster and cleaner the build.
What is the difference between a private app and a public app?
A private app is built exclusively for one Shopify store and is never listed on the App Store. A public app can be installed by any merchant and goes through Shopify's review process for App Store listing.
Will my app work with the latest Shopify API version?
Yes
Can you build an app that customizes my checkout?
Absolutely. Since Shopify deprecated checkout.liquid, the only supported way to customize checkout is through Checkout UI Extensions and Shopify Functions.
Do you help with submitting the app to the Shopify App Store?
Yes, this is included in the Premium package.
