The latest articles on DEV Community by azi jan (@azijan). https://dev.to/azijan https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4104616%2Fbddd2bb5-d93d-4a9b-9ac7-e12e7a8e1b0d.png https://dev.to/azijan en azi jan Tue, 01 Sep 2026 15:15:07 +0000 https://dev.to/azijan/building-a-production-ready-multi-tenant-erp-pos-saas-starter-kit-with-react-19-and-supabase-1k20 https://dev.to/azijan/building-a-production-ready-multi-tenant-erp-pos-saas-starter-kit-with-react-19-and-supabase-1k20 <p>Building enterprise-grade SaaS systems from scratch takes weeks of repetitive architecture work: configuring multi-tenancy, securing database row-level security (RLS), setting up real-time inventory triggers, and building double-entry accounting structures.</p> <p>To solve this, I built <strong>Invovo ERP</strong> — an unminified, full-stack multi-tenant ERP &amp; POS SaaS starter kit powered by <strong>React 19, Vite, Tailwind CSS, and Supabase PostgreSQL</strong>.</p> <h2> ⚡ Architecture &amp; Key Features </h2> <h3> 1. Database-Level Multi-Tenancy (Supabase RLS) </h3> <p>Tenant data isolation shouldn't rely on fragile frontend filtering. In Invovo ERP, multi-tenancy is enforced directly inside PostgreSQL policies:</p> <ul> <li>Every table (<code>customers</code>, <code>suppliers</code>, <code>orders</code>, <code>inventory</code>) binds to an isolated <code>tenant_id</code>.</li> <li>Supabase Row Level Security ensures one tenant can never query or mutate another tenant's records.</li> </ul> <h3> 2. High-Speed POS Terminal </h3> <ul> <li>Fast barcode &amp; item search with reactive quantity increments.</li> <li>Configurable cart-level discounts and tax settings.</li> <li>Instant, printable receipt modal matching standard thermal slip specifications.</li> </ul> <h3> 3. Double-Entry Ledgers &amp; Khata System </h3> <ul> <li>Automatic debit/credit tracking for customer receivables and supplier payables.</li> <li>Real-time balance recalculations on every transaction.</li> <li>Exportable transaction ledgers with invoice references.</li> </ul> <h3> 4. Inventory, Low-Stock Triggers &amp; Financial Analytics </h3> <ul> <li>Custom unit registries (Pcs, Kg, Box, Liters, Meters).</li> <li>Automated visual alerts when stock levels fall below safe thresholds.</li> <li>Real-time Profit &amp; Loss reports and revenue margin dashboards.</li> </ul> <h2> 🚀 Live Interactive Sandbox </h2> <p>You can test the entire workflow live in the browser without any sign-up requirements:</p> <ul> <li> <strong>Live Sandbox:</strong> <a href="https://invovo-erp-demo.vercel.app" rel="noopener noreferrer">https://invovo-erp-demo.vercel.app</a> </li> <li> <strong>1-Click Guest Login:</strong> <ul> <li> <strong>Email:</strong> <code>demo@invovoerp.com</code> </li> <li> <strong>Password:</strong> <code>demo12345</code> </li> </ul> </li> </ul> <h2> 📦 Source Code &amp; Production Starter Kit </h2> <p>The complete codebase, documentation, and PostgreSQL schema migrations are available now:</p> <ul> <li>🛒 <strong>Gumroad:</strong> <a href="https://azijana.gumroad.com/l/invovo-erp-saas-starter-kit" rel="noopener noreferrer">Invovo ERP on Gumroad</a> </li> <li>🍋 <strong>Lemon Squeezy:</strong> <a href="https://aziaisolutions.lemonsqueezy.com/checkout/buy/d41b79c8-f046-4c32-9d81-f6c30b279fb7" rel="noopener noreferrer">Invovo ERP on Lemon Squeezy</a> </li> </ul> <p>Both <strong>Standard Developer</strong> ($49) and <strong>Unlimited Agency</strong> ($239) licenses are available. Feedback and technical discussions are welcome in the comments!</p> react supabase webdev saas