Senior Full-Stack Developer Needed for Custom B2B Order Management Platform

Project Overview We are a growing manufacturing company seeking an experienced Full-Stack Developer to build a custom internal Order Management Platform that will centralize our operations, automate workflows, and replace several manual processes currently spread across multiple tools. This is not a Shopify app, ERP implementation, or no-code solution. We are looking for a developer who can architect and build a scalable custom web application from the ground up. About Us We operate a Shopify Plus-based B2B apparel manufacturing business serving hundreds of retail and brand accounts across the United States. Our current workflow spans Shopify, Google Sheets, approval systems, automation tools, and manual communication with overseas production partners. As our business continues to grow, we need a centralized platform that provides visibility, automation, and operational efficiency across our entire order lifecycle. What You'll Build The platform will include: ✅ Unified Order Database synchronized with Shopify Plus ✅ Sales Pipeline Dashboard ✅ Logistics Management Dashboard ✅ China Team Portal for production and tracking updates ✅ Automated Customer Milestone Emails ✅ Role-Based Authentication & Permissions ✅ Third-Party Integrations (Shopify Admin API, Ziflow, Zapier, Email Service) Required Skills Next.js / React Node.js Shopify Admin API PostgreSQL or Supabase REST APIs & Webhooks Authentication & Role Management Dashboard Development Email Automation Production Deployment Experience Nice to Have Previous Shopify Plus experience Manufacturing or Operations Management systems Logistics or Supply Chain platforms B2B workflow automation projects Deliverables The project will be completed in milestone-based phases covering: Database Architecture Shopify Integration Sales Dashboard Logistics Dashboard External Partner Portal Automated Notifications Authentication & Deployment To Apply, Please Include Examples of similar dashboard, ERP-lite, OMS, CRM, or operations platforms you've built Shopify API experience and relevant projects Your preferred tech stack and architecture approach Estimated timeline Any questions or recommendations regarding the project scope Budget Fixed Price: $5,000 – $6,000 We may invite shortlisted candidates to a paid discovery phase before the full project begins