I will integrate or fix shopify woocommerce shipstation dhl fedex usps API

M
marcellusmith
M
marcellusmith
Marcel Smith
integrate or fix shopify woocommerce shipstation dhl fedex usps API
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integrate or fix shopify woocommerce shipstation dhl fedex usps API

About this gig

Need to connect your Shopify or WooCommerce store with a shipping platform or carrier API?


I can integrate and troubleshoot shipping systems such as ShipStation, DHL, FedEx, USPS and other platforms with available API/integration support.


I can help with:

  • Shopify shipping integrations
  • WooCommerce shipping integrations
  • ShipStation integration
  • DHL API integration
  • FedEx API integration
  • USPS API integration
  • Shipping rate problems
  • Shipping methods not appearing
  • Orders not syncing to shipping platforms
  • Tracking synchronization
  • Shipping label workflow issues
  • API authentication errors
  • Order fulfillment automation
  • Webhook/API synchronization
  • Custom shipping API connections


I can troubleshoot the complete flow from store order shipping platform/carrier fulfillment/tracking where the available APIs support it.


For new integrations, I will review the required API credentials, documentation and workflow before implementation. For existing integrations, I will first identify where the synchronization is failing before making changes.


Please message me with your store platform, shipping provider and exact requirement before ordering so I can confirm compatibility and scope.

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Operating systems

  • Programming language

    • HTML & CSS

  • Frontend framework

    • Next.js
    • React.js

  • Backend framework

    • Laravel
    • Next.js
    • Node.js

Get to know Marcel Smith

Marcel Smith

Shopify Developer Technical SEO and Headless Commerce Expert

  • FromUnited Kingdom
  • Member sinceDec 2025
  • Avg. response time1 hour

  • Languages

    English, French, Spanish, German
I help Shopify and eCommerce businesses improve store performance, fix technical issues, and build scalable solutions that support growth. My expertise includes Shopify development, technical SEO fixes, 404 error resolution, 301 redirects, broken link cleanup, Checkout Champ and Funnelish integrations, headless Shopify storefronts using Hydrogen, React & Next.js, and custom API integrations. Whether you need urgent technical fixes, advanced Shopify customization, or a modern headless storefront, I’m here to help you get the job done properly and efficiently. Contact me now to start

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