I’m looking for an experienced Shopify developer to complete a custom Shopify app for a salon affiliate / trade program. I’ve already done significant groundwork but ran into technical setup and deployment issues and need someone experienced to finish this properly. IMPORTANT: Please include a fixed fee quote for the this task in your response. What I’ve Already Built / Attempted Created Shopify Forms for the salon trade / affiliate application (Form lives in Shopify Admin → Apps → Forms and is already connected to customer creation) Built the front-end structure for the trade application flow Installed Node.js and Shopify CLI locally Attempted to scaffold a Remix app using shopify app init Began implementing draft order logic Attempted local development via Shopify CLI Attempted deployment via Railway Issues I Ran Into CLI syntax inconsistencies and scaffolding confusion Authentication / client ID configuration issues Interactive terminal prompts stalling during initialization Railway deployment issues related to environment variables and Shopify app configuration Uncertainty around best architecture for handling: Quantity validation Draft order creation Automated email with invoice link At this point, I’d prefer someone experienced to cleanly structure and complete this rather than continue troubleshooting. What the App Must Do Receive form submission (email + selected variants + quantities) Validate total quantity across variants ≤ 2 If valid: Create a Draft Order using Shopify Admin API Generate invoice / checkout URL Automatically email checkout link to customer If invalid: Do not create order Send resubmission email No manual approval step. Fully automated. Technical Requirements Shopify custom app (private / internal) Prefer Remix + JavaScript (but open to clean rebuild if better) Shopify Admin API draftOrderCreate mutation Proper authentication and token handling Production-ready deployment (Railway, Fly.io, Render, etc.) Clear environment variable documentation Clean structure for future expansion Deliverables Fully working app Quantity validation logic Draft order creation Automated checkout link email Clean deployment Brief Loom walkthrough explaining architecture and setup Please Include in Proposal Examples of Shopify custom apps you’ve built Confirmation you’ve worked with draft orders and Shopify Admin API Estimated timeline Fixed price quote preferred Whether you would repair current scaffold or rebuild from scratch This is an internal automation tool, not a public App Store app. Clean architecture and reliability are more important than overengineering. Looking forward to working with someone experienced who can take this over and complete it properly.