Sazzad H.

★★ Full Stack Developer | SaaS & AI Solutions | Next.js, Node.js, Python, FastAPI, Supabase ★★ ★★ AI Solutions & Automation Specialist | RAG, LLM Integrations & SaaS Platforms ★★ ★★ 5+ Years of Proven Experience Building Scalable, High-Performance Web Products ★★ I’m a Full Stack Developer with over 5 years of experience, specializing in building scalable SaaS applications and AI-powered solutions using Next.js, Node.js, and FastAPI. 🧠 Tech Stack Expertise Frontend: React • Next.js • TypeScript • Streamlit • Redux • Tailwind CSS • Bootstrap • HTML • CSS Backend: Node.js • NestJS • FastAPI • Supabase • GraphQL • Redis • RabbitMQ • Bull Database: MongoDB • PostgreSQL • MySQL AI & Automation: Retrieval-Augmented Generation (RAG) • LLMs • LangChain • n8n • Zapier • AI Agents Deployment & DevOps: AWS • Google Cloud • Heroku • Vercel • DigitalOcean ⚙️ What I Deliver ✅ AI-Powered Applications & Chatbots (LLM + RAG Integration) ✅ E-Commerce Platforms & SaaS Applications ✅ Workflow Automation (n8n, Zapier, Custom AI Agents) ✅ CMS Development (Payload, Contentful, Strapi, Directus, Craft CMS) ✅ Responsive, SEO-Optimized Frontends ✅ Secure Authentication & API Integrations ✅ Payment Gateway Integration (Stripe, PayPal) ✅ Multi-Language Support ✅ Performance Optimization & Maintenance Let’s connect and discuss how I can bring your ideas to life with cutting-edge web and AI technology. Key Skills & Keywords (for Discoverability) Full Stack Developer | Senior Full Stack Developer | Full Stack Engineer | React Developer | React.js Expert | Next.js Developer | Node.js Developer | NestJS Developer | MERN Stack Developer | Backend Developer | Node.js Backend Engineer | React & Node.js Specialist | Full Stack Web Developer | SaaS Developer | Enterprise SaaS Developer | Admin Dashboard Developer | Role-Based Access Control (RBAC) | Analytics & Reporting Systems | Internal Workflow Automation | Cloud-Ready Applications | AWS Developer | Python Full Stack Developer | Scalable Web Applications | API Development | Modern Web Architecture