Full-Stack Developer Needed to Build AI-Integrated SaaS MVP with Next.js and Node.js

We have a validated SaaS idea and we are ready to build. We need a full-stack developer who can take the product from concept to a deployed, production-ready MVP with AI features baked in from the start. This is not a simple dashboard. The product requires a clean frontend, a solid backend, Stripe subscription billing, multi-role authentication, and at least one core AI-powered feature that is central to how the product works. If you have built SaaS products before and have the scars to prove it, we want to talk. What the build includes: - Frontend built with Next.js using the App Router, TypeScript, and Tailwind CSS with a clean responsive UI that does not look like a template - Backend REST API built with Node.js and Express handling authentication, business logic, and all database operations - Multi-role authentication with JWT covering standard user and admin roles, with protected routes and session handling - Stripe subscription billing including plan selection, webhook handling, and a working customer portal for managing subscriptions - Admin dashboard with user management, subscription visibility, and basic usage analytics - AI integration using OpenAI or Anthropic API to power the core feature of the product, which we will define together during onboarding - PostgreSQL or MongoDB as the database depending on what best fits the data model - Deployment on Vercel for the frontend and Railway or Render for the backend, with environment variables and production configuration handled correctly We expect clean code, clear documentation, and a handover that includes everything needed to maintain and extend the product after delivery. To apply, share two or three live SaaS projects you have shipped. Include a short note on how you approach Stripe webhook reliability and AI integration in a multi-tenant environment. Those two things tell us a lot about your experience level.