CheckoutChamp Developer — Build Shopify Upsell Funnels with API Integrations (Fast Turnaround)

We're TellMyTale - we sell personalized children's storybooks (Shopify, 8-figure group, three DTC brands). We're moving our checkout and upsell flow to CheckoutChamp and we need someone who has already done this, not someone who will learn it on our funnel. What you'll build: * A CheckoutChamp checkout + upsell funnel for our personalized book offer. * Pre-purchase order bumps and multi-step post-purchase upsells and downsells. * API integration between CheckoutChamp and Shopify - orders, customer data, and product/variant mapping flowing correctly in both directions so fulfillment and reporting stay clean. * Campaign, product, and offer setup inside CheckoutChamp (funnels, paths, upsell logic). * Correct tracking and attribution passthrough (UTMs, order-level data to our analytics stack). * QA on live test orders before we send paid traffic. You're a fit if you: * Have shipped multiple live CheckoutChamp funnels (Konnektive experience counts) - we'll ask for URLs and what exactly was yours. * Have connected CheckoutChamp to Shopify via API, including custom middleware where needed. * Are comfortable with REST APIs, webhooks, and writing the glue code (Node, PHP or Python - your choice). * Understand DTC upsell economics: AOV, take rate, and why a broken upsell step costs real money. * Move fast. We want the first working funnel live in days, not weeks. Speed of delivery is the single biggest factor in who we hire. Nice to have: * Experience with a personalized or custom product (per-order artwork or data, not a plain SKU). * Payment gateway routing or decline recovery inside CheckoutChamp. * Experience with Shopify apps or a headless setup. How we work: * Direct access to us, fast answers, no committees. You get a decision same day. * Paid milestones, first milestone small so we both find out quickly if this works. * If the first funnel goes well there's ongoing work - more funnels across our other two brands. To apply, answer these 3 (applications without answers are skipped): 1. Link 1-2 live CheckoutChamp funnels you built. What was your part, and what was the take rate on the first upsell? 2. Describe how you'd sync CheckoutChamp orders into Shopify for a product where every order has unique personalization data. Where does that integration usually break? 3. Realistically, how fast can you get a working checkout + one post-purchase upsell live, starting this week? What do you need from us on day one? Please start your reply with the word BOOKS so we know you read this.