Full-Stack Developer for AI Chatbot & SaaS Platform Next.js, Node.js, OpenAI

We are looking for an experienced Full-Stack Developer to build and improve an AI-powered SaaS platform with an integrated chatbot, user dashboard, admin system, backend APIs, and third-party integrations. The developer will be responsible for the complete development process, including frontend implementation, backend architecture, database setup, AI integrations, testing, deployment, and ongoing improvements. Scope of Work * Build a modern and responsive SaaS platform using Next.js, React, TypeScript, and Tailwind CSS * Develop backend APIs and business logic using Node.js and Express.js * Design and manage the PostgreSQL database * Build and integrate an AI chatbot using OpenAI or similar AI models * Implement conversation history, contextual responses, and workflow automation * Develop secure user authentication and role-based access control * Build user dashboards and an admin management system * Add document uploads, AI-powered processing, and data retrieval where required * Integrate Stripe subscriptions, recurring payments, or usage-based billing * Connect third-party APIs, email services, and external business tools * Implement notifications, activity logs, analytics, and error monitoring * Deploy the application using AWS, Vercel, Docker, or similar cloud infrastructure * Perform testing, optimization, bug fixing, documentation, and final handover The final platform should be secure, scalable, mobile-responsive, and ready for production use. The developer should have strong experience with full-stack SaaS development, AI chatbot development, Next.js, Node.js, PostgreSQL, OpenAI integrations, API development, and cloud deployment.