Browse categories
Explore
Fiverr Pro
English
$
USD
I will shopify custom app public private hydrogen headless functions api liquid scripts
Michelle Hayes
About this gig
SHOPIFY CUSTOM APP | HYDROGEN HEADLESS | FUNCTIONS DEVELOPER
Is your Shopify store losing revenue? Scripts stop working June 30, 2026. Or do you need a powerful custom app or hydrogen headless storefront that converts?
I'm Michelle a certified Shopify developer specializing in:
- Shopify hydrogen headless storefront builds
- Scripts to Shopify functions migration (June 30 deadline)
- Shopify headless storefront with oxygen hosting
- Shopify checkout extensibility & payment customization
- Storefront API, admin API & GraphQL integration
- Shopify liquid coding, bug fix & theme customization
- Shopify flow automation & API integration
- Shopify B2B, POS & custom checkout logic
Whether you need a custom Shopify app, headless hydrogen storefront, or urgent scripts migration I deliver clean, tested, production-ready code that passes Shopify review.
Clean code. Tested builds. Shopify compliant apps. Fast delivery.
You get: documented code, dev store testing, live deployment + post-launch support.
MESSAGE ME NOW for a free audit. Let's build your next-level Shopify solution today.
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 Michelle Hayes
Michelle Hayes
Automate your shopify store
- FromUnited States
- Member sinceMar 2026
- Avg. response time1 hour
Languages
English, French, Spanish, German, Italian, Finnish, Dutch, Arabic
I help creators, sellers, and Shopify store owners build digital systems that sell and scale on autopilot.
From Stan Store setup, Beacons AI, Gumroad, Payhip, and TikTok Shop to full Shopify automation. I build reliable solutions for inventory sync, order processing, fulfillment, 3PL workflows, POS integrations, and Shopify API connections.
Need a private app, headless Shopify fix, Liquid update, checkout automation, or a complete digital product store? I create systems that reduce manual work, eliminate errors, and drive consistent revenue.
One expert. Every platform. Done right.
FAQ
What types of Shopify apps can you build?
I build all three Shopify app types: public apps (listed on the Shopify App Store), private apps for single-store use, and fully custom apps with admin UI, API integrations, webhooks, and App Bridge. Every app is tested, documented, and delivered with source code.
Can you build a Shopify hydrogen headless storefront?
Yes. I build custom hydrogen storefronts using React, Shopify Storefront API, and GraphQL, deployed on Shopify Oxygen or Vercel. These storefronts are fast, conversion-optimized, and fully branded. I also fix bugs, broken components, and deployment failures on existing hydrogen setups.
What is Shopify Scripts migration and why is it urgent?
Shopify Scripts are Ruby-based checkout customizations available only on Shopify Plus. Shopify permanently stopped allowing edits as of April 15, 2026, and all Scripts stop executing entirely on June 30, 2026. Migration means rebuilding yo
Do you work with all Shopify plans or only Shopify Plus?
I work with all Shopify plans. However, advanced checkout customization, Scripts migration, and certain Functions APIs require Shopify Plus. Basic custom apps, hydrogen storefronts, and API integrations are available on all plans. Message me and I'll tell you exactly what your plan supports.
How long does a Shopify custom app take to build?
Simple apps with one core feature take 3–5 days. Full public or private apps with API integrations, App Bridge UI, and webhook setup take 5–7 days. Complex AI-powered or multi-integration apps take 10–14 days. I always test on a dev store before going live.
Will my live store be affected during migration or development?
No. All development and testing happens on a separate dev store. Your live store is never touched until everything is confirmed working perfectly. Your checkout stays live and fully operational throughout the entire process.
What APIs and integrations can you connect to my Shopify store or app?
I integrate virtually any API — payment gateways, shipping providers, CRMs, ERPs, inventory systems, TikTok Shop, Facebook Shop, AI APIs (OpenAI, Claude), and more. I work with Shopify Admin API, Storefront API, GraphQL, REST, and webhooks for seamless data sync.
Can you submit my app to the Shopify App Store?
Yes. I handle the complete App Store submission process including OAuth setup, App Bridge v3 compliance, Polaris UI standards, billing API, and meeting all Shopify review requirements. I make sure your app passes inspection the first time.
My existing Shopify app is broken due to API changes. Can you fix it?
Absolutely. Shopify frequently deprecates older API versions and this breaks apps. I update deprecated endpoints, migrate to the latest API version, fix broken webhooks, repair Admin or Storefront GraphQL errors, and restore full app functionality — fast.
What do you need from me to get started?
Just message me first. I'll need your Shopify store URL, collaborator access (safe, no password sharing), a description of the app or feature you need, and any existing code if applicable. I'll review everything for free and send you a clear plan with timeline before any work begins.
