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$
USD
I will develop custom shopify app with polaris admin checkout extensions and api
Hevin G
Top Rated
About this gig
I build production Shopify apps that pass App Store review, scale with merchants, and do not break checkout. Modern stack with Polaris UI, GraphQL Admin API, OAuth, webhooks, theme app extensions and checkout extensibility.
What you get:
Custom embedded app with Shopify CLI, React + Polaris admin UI, OAuth flow, billing API, GDPR webhooks. App Bridge 4.x.
Theme app extensions. App blocks, embeds, and sections that merchants drag into their themes without editing code.
Checkout extensibility for Shopify Plus. Custom checkout UI extensions, additional fields, payment customizations.
GraphQL Admin API integrations. Products, orders, customers, metafields, inventory. Sync your CRM, ERP or any backend.
Webhook handlers with HMAC verification, scopes, sessions. Idempotent processing.
Liquid theme work when needed. Custom sections, snippets, drawer, cart customizations.
You get the full source code, a clean git repo, App Store submission help if needed, and 30 days of post-launch support.
Send me your brief and we can scope it tight.
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 Hevin G
Hevin G
Mobile and full stack developer who builds apps that actually work
Top Rated
- FromIndia
- Member sinceApr 2019
- Avg. response time1 hour
- Last deliveryabout 20 hours
Languages
English, Hindi, Portuguese, Spanish
I build mobile and web apps, and honestly most things that run on a computer. My core strength is mobile (native Android and iOS, plus Flutter and React Native), backed by full stack web and backend work, so I can take a product from a rough idea to a shipped, working app.
What clients keep coming back for isn't just the code, it's that I treat their product like my own. No quick patches, no half finished work. I find the real problem, build it right, and make sure it holds up in the real world. Got an idea, even a rough one? I'll help you build it.
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FAQ
Will I get the source code?
Yes. Every package includes the full app source code in a clean git repo with documentation. You own it and can modify, deploy, or extend it anytime.
Can you publish my app to the Shopify App Store?
Yes. Premium includes App Store preparation: listing copy, screenshots, privacy policy template, GDPR webhooks, billing API, and the submission process. Review usually takes 1-2 weeks on Shopify side.
Do you build for Shopify Plus?
Yes. Premium includes Shopify Plus features: checkout UI extensions, B2B, Shopify Scripts (legacy), Functions, and headless setups with Hydrogen if needed.
Can you build checkout UI extensions?
Yes, included in Premium. Checkout UI extensions for Shopify Plus stores: custom fields, banners, product offers, payment customizations, and shipping customizations using the modern Checkout Extensibility API.
Do you handle theme app extensions?
Yes. Theme app extensions in Standard and Premium: app blocks, embeds, and sections merchants drag into themes. Works with section-only Online Store 2.0 themes.
Can you integrate with my existing API or third-party services?
Yes. Standard and Premium include integration with your CRM, ERP, accounting, Klaviyo, Mailchimp, Stripe, your own backend, or any REST/GraphQL API. Webhook handlers for both directions.
