Hemant Kumar Angajala is a full-stack AI engineer based in Visakhapatnam, India, building production LLM applications since 2020, after training in machine learning and neural networks in 2019. He builds stateful AI agents and RAG systems with LangChain, LangGraph, Claude, GPT, and Gemini, backed by Python/FastAPI services and React/Next.js frontends. Current projects include OpenBeat, a simulation arena where AI personas react to marketing copy before real people do — validated against 3 published A/B tests, called all 3 correctly — and IRA, a fully local voice assistant with no cloud API. He also takes on client work for LLM integration, RAG pipelines, and full-stack builds; see current availability.