My Shopify store for DTF transfers and custom-printed apparel is live but still missing several key pieces before I can start taking orders. The most urgent need is wiring in the ssactivewear.com inventory feed; I already have their API documentation and keys ready, I just need someone who can connect it to Shopify so products, variants, and live stock levels stay perfectly in sync. Once the feed is running, I want to polish the customer experience around design uploads and pricing. Shoppers must be able to upload artwork, see an on-screen mock-up, and have the price calculate automatically at $0.07 per square inch—then pass that exact cost through to the cart and checkout. The upload tool is partially in place, but the front-end preview and price logic still need finishing and testing. Finally, the entire checkout flow has to be validated—from cart through payment and order confirmation—so I can launch with confidence. Deliverables: • Fully functional ssactivewear API integration with automatic product and inventory sync • Upload + mock-up tool that writes the correct print area and artwork file to the order • Dynamic square-inch pricing reflected everywhere (product page, cart, checkout, admin) • End-to-end checkout tested, including payment, taxes, shipping, and confirmation emails Shopify Liquid, storefront API, script editor/functions, and print-on-demand workflow know-how are all essential. If you have solved similar challenges on Shopify, I’m ready to get this project moving right away.