I’m Djaouad Frih, a full-stack engineer building and deploying production-grade generative AI and LLM-based systems remotely worldwide. I design end-to-end solutions such as LangChain/LangGraph RAG pipelines, agent frameworks with tool calling, streaming experiences, and prompt engineering—then ship them into real web and mobile products. I’ve built and operated four live products solo, including AI virtual reception and customer support agents, plus a smart PDF workspace with page-level citations and multi-tenant authentication. My day-to-day stack is Python and TypeScript (Next.js/NestJS/FastAPI), PostgreSQL with pgvector for retrieval, and cloud deployments, with strong focus on reliability, usability, and measurable outcomes.…I’m Djaouad Frih, a full-stack engineer building and deploying production-grade generative AI and LLM-based systems remotely worldwide. I design end-to-end solutions such as LangChain/LangGraph RAG pipelines, agent frameworks with tool calling, streaming experiences, and prompt engineering—then ship them into real web and mobile products. I’ve built and operated four live products solo, including AI virtual reception and customer support agents, plus a smart PDF workspace with page-level citations and multi-tenant authentication. My day-to-day stack is Python and TypeScript (Next.js/NestJS/FastAPI), PostgreSQL with pgvector for retrieval, and cloud deployments, with strong focus on reliability, usability, and measurable outcomes.WWWW…