Muhammad u.

AI developer building RAG pipelines, AI agents and LLM features with LangChain, Python and Next.js, backed by 10 years of full-stack work. Top Rated Plus | 100% Job Success | $100K+ earned | 61 jobs | 5,400+ hours on Upwork since 2016. Most AI projects stall after the demo: answers drift, costs climb, and the code is hard to maintain. I build AI features like real software: grounded in your data, tested, secure, and connected to the web or mobile app your users already have. AI & RAG DEVELOPMENT - RAG pipelines on your own documents and data (LangChain, LlamaIndex) - AI agents and multi-step workflows (CrewAI, LangChain) - Semantic search with vector databases: Pinecone, Weaviate, Milvus - AI chatbots and LLM integration into existing products - n8n and Zapier automation for leads, follow-ups and CRM tasks - Prompt engineering and evaluation to keep outputs accurate FULL-STACK WEB & MOBILE - Backend APIs: Python (FastAPI, Flask), Node.js, PHP, Laravel - Frontend: React, Next.js, TypeScript, Angular - Mobile apps: Flutter, React Native, Ionic - PostgreSQL, MySQL, MongoDB, Docker, AWS, GCP RECENT WORK - LangChain, RAG and Pinecone features for semantic search and long-term AI memory, as Senior Software Engineer at Audienta - AI lead automation and multi-channel follow-up system - Booking and loyalty systems for a long-term client, 3,300+ hours with one agency team WHY CLIENTS STAY - One developer for the whole build: AI, backend, web and mobile - Many long-term contracts and a 100% Job Success score - Replies within a few hours Tell me what data you have and what you want it to do. Send an invite and I'll reply with a clear plan.