MD HABIBUL H.

Senior Backend Developer | Node.js + AI Integration | RAG Systems

I'm a Senior Backend Developer and AI Integration Specialist with 10+ years of experience building scalable systems. I help startups and enterprises integrate AI capabilities into their products—from RAG-based chatbots to intelligent automation workflows. WHAT I BUILD: - AI-powered applications (RAG systems, chatbots, semantic search) - Production-ready backend systems (NestJS, Node.js, PostgreSQL) - SaaS platforms at scale (100K+ users, high concurrency) - AI integrations using OpenAI, Claude, and Langchain AI INTEGRATION EXPERTISE: - Retrieval-Augmented Generation (RAG) systems - Vector databases (Pinecone, Weaviate, ChromaDB) - LLM orchestration (Langchain, LlamaIndex) - Prompt engineering and cost optimization - Production AI deployment and monitoring CORE TECH STACK: Backend: NestJS, Node.js, TypeScript, Python Databases: PostgreSQL, MongoDB, Redis, Vector DBs AI/ML: OpenAI API, Claude API, Langchain Cloud: AWS, Docker, Kubernetes, CI/CD Tools: Cursor AI, Claude Code (AI-assisted development) RECENT EXPERIENCE: - Head of Engineering (Ai , Cloud and Infra) at Innospace Infotech (40-person engineering team) - Built Brritto MCQ platform (500K+ active users) - Created PocketSchool EdTech (500+ backend engineering students) - YouTube educator (35K subscribers, Bengali tech content) - Ai first watsapp CRM whtasmonk - Wedokan ai first ecommerce builder -Next Gen shop builder UNIQUE ADVANTAGE: I use AI-first development workflows (Cursor, Claude Code) to ship production features 10x faster. I don't just talk about AI integration—I live it. Let's build intelligent systems that deliver real business value.