portfolio

Rahul Kumar Singh

Full Stack AI Developer · LLMs, RAG & AI Agents · MERN

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I'm a Full-Stack Developer with a strong focus on AI and LLM engineering — I build scalable applications, integrate intelligent features, and turn ideas into production-ready systems.

I build full-stack applications using React.js, Next.js, Node.js, Express.js, TypeScript, FastAPI, and MongoDB, with a strong foundation in REST API design and scalable backend architecture.

I also work with AI and LLM technologies including OpenAI API, LangChain, LangGraph, CrewAI, n8n, prompt engineering, and RAG to build intelligent and agentic workflows.

I enjoy solving real-world problems where modern web technologies and AI come together, with a focus on building practical, reliable, and scalable products.

Applied AI & LLMsAgentic AI & AutomationFull-Stack DevelopmentBackend & API Architecture