I will build shopify private app shopify public app api integration shopify liquid code

L
lars_sondergaar
L
lars_sondergaar
Lars Son
build shopify private app shopify public app api integration shopify liquid code
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build shopify private app shopify public app api integration shopify liquid code

About this gig

Is your Shopify store missing features, breaking during checkout, or throwing Liquid errors that stop sales?, You're in the right place.

I help Shopify store owners build custom apps and fix critical bugs fast, so your store runs smoothly and your customers can buy without issues.

Whether you need a private Shopify app, custom API integration, or a complex bug fixed urgently, I deliver clean, scalable solutions.



WHAT I CAN I CAN DO FOR YOU

  • Custom Shopify App Development
  • Shopify Plus Customization
  • Data Migration & Syncing
  • API Integration (SMS, Courier, Payment, etc.)
  • Loyalty or reward apps
  • Subscription management
  • Custom checkout features
  • Automated workflows
  • Inventory integrations
  • ERP/CRM integrations
  • Custom dashboards
  • Shopify admin tools



Common issues I solve:

  • Checkout errors
  • Shopify Liquid bugs
  • Theme coding issues
  • App conflicts
  • JavaScript errors
  • Payment gateway problems
  • Cart issues
  • Shopify API errors
  • Speed or performance issues


\Shopify Technologies I Work With

  • Shopify CLI
  • Shopify Hydrogen
  • Shopify Polaris
  • Shopify Liquid
  • Shopify REST API
  • Shopify GraphQL API
  • Node.js / React
  • Webhooks
  • Shopify Admin API



Contact me today to get started!

  • Website type

    • E-Commerce store

  • Website features

    • Marketing
    • Payment
    • Forum
    • Social media
    • Customer support
    • Video
    • Membership
    • Map
    • Gallery
    • Booking

  • Plugins

    • Nudgify
    • Free Shipping Bar
    • Product Reviews
    • Product Filter & Search
    • Store Locator
    • PageFly
    • Smart SEO
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 Lars Son

Lars Son

Shopify Developer And Liquid Expert

  • FromSpain
  • Member sinceFeb 2026
  • Avg. response time3 hours

  • Languages

    English, German
I’m a Shopify developer focused on building fast, scalable, and conversion-focused eCommerce stores. I help businesses launch, customize, and optimize Shopify stores with clean code and modern design. My services include full store setup, custom theme development, Shopify 2.0 customization, Liquid coding, app integrations, performance optimization, bug fixes, and advanced features. I work with HTML, CSS, JavaScript, and Shopify APIs to deliver reliable solutions that help brands grow and sell more online. I value clear communication, quality work, and long-term client success.

Other Website Development Services I Offer

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