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I will shopify public app shopify custom app shopify private app shopify developer pos
Samuel .H
About this gig
Looking for a skilled Shopify developer who can build powerful, scalable, and performance driven apps? You're in the right place. My name is Walker, and I specialize in creating high quality Shopify public apps, custom apps, private apps (legacy), and Shopify POS apps tailored to your business needs.
I deliver secure code, seamless integrations, and fully optimized solutions using Shopify Admin API, Storefront API, OAuth, Webhooks, Shopify Functions, Polaris UI, App Bridge, and modern app development best practices.
Services I Offer:
- Shopify Bug Fix
- Shopify Public App Development
- Shopify Custom App Development
- Shopify Private App Maintenance & Migration
- Shopify POS App & Hardware Integrations
- Bug Fixing & App Optimization
- API Development & Third-Party Integrations
- Custom Dashboards & Automation Workflows
- Embedded App UI with Polaris
- Webhooks, Scripts & Shopify Functions
- Performance, Security & Scalability Enhancements
If you want a fast, secure, and future-proof Shopify solution created by a dedicated expert let's work together.
Ready to scale your Shopify business? Click Continue and get started today!
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Get to know Samuel .H
Samuel .H
Everything Shopify
- FromUnited States
- Member sinceMar 2026
- Avg. response time1 hour
- Last deliveryabout 14 hours
Languages
English, German
Hey, I'm Samuel, a Shopify specialist who handles everything from store builds to POS systems, custom app development, and API integrations.
I work across the full Shopify stack:
→ Shopify POS setup — point of sale, payment gateway, inventory sync, Toast & Square
→ Shopify store design — build, redesign, dropshipping, payments, SEO
→ Shopify app development — public apps, private apps, custom API integrations
→ Shopify app installation — B2B, B2C, third-party API connections
I deliver clean, documented work fast.
My Portfolio
FAQ
What is the difference between a Shopify public app and a private app?
A Shopify public app is listed on the Shopify App Store and can be installed by any merchant. A Shopify private app is built exclusively for one store and not publicly listed — ideal for custom automation, internal workflows, or proprietary integrations unique to your business.
Can you build a Shopify custom app from scratch?
Yes. I build fully custom Shopify apps from the ground up — including frontend UI, backend logic, API integration, and full Shopify store connection — all tailored precisely to your specifications and business requirements.
What APIs can you integrate with my Shopify app?
I can integrate virtually any third-party API — including payment gateways, shipping providers, ERP and CRM platforms, supplier APIs, inventory sync tools, TikTok Shop, Facebook Shop, and more — directly into your Shopify app or store.
Can you submit my app to the Shopify App Store?
Absolutely. I handle the entire Shopify App Store submission process — including OAuth setup, meeting Shopify's review requirements, and ensuring your public app passes all compliance and security checks for listing.
Do you support Shopify POS and payment gateway integration?
Yes. I develop Shopify POS extensions and apps that integrate with Shopify's point-of-sale system, and I can connect custom payment gateways to both public and private Shopify apps.
What technologies do you use for Shopify app development?
I work with Node.js, React, PHP Laravel, Ruby on Rails, and the Shopify CLI and Polaris UI framework. I always use the latest Shopify API versions and follow Shopify's official development best practices.
Will my Shopify app work with Shopify Plus?
Yes. All apps I build are fully compatible with Shopify Plus, including advanced checkout customization, multi-store setups, and enterprise-level API integrations exclusive to Plus merchants.
Can you fix or update my existing Shopify app?
Absolutely. I offer Shopify app debugging, feature additions, API migration, performance optimization, and full redesigns of existing public or private apps. Just share your project details and I'll assess the scope quickly.
