Mohsin M.

🌟 Full-stack AI engineer. I build AI agents, RAG systems, AI chatbots and voice agents, and integrate AI into existing products with Python, FastAPI, Next.js and n8n automation. 🏆 Top Rated Plus | 💰 $600K+ earned on Upwork | ⏱️ 19,540+ hours | 📅 12+ years building software | 🎓 Dr.-Ing. in Artificial Intelligence and MSc in Intelligent Systems, TU Kaiserslautern 🧠 WHAT I BUILD 🤖 AI agents: multi-agent workflows with LangGraph and LangChain on OpenAI and Claude 📚 RAG systems: answers grounded in your own documents, with strict per-client data separation using Pinecone or pgvector 💬 AI chatbots: website and WhatsApp chatbots that answer from your own data and live CRM records 📞 Voice agents: real-time phone and web voice agents with Twilio, LiveKit, Deepgram and ElevenLabs ⚡ n8n and AI automation: CRM, lead, scraping, recruitment and content workflows 🔌 AI integration: LLM features added to an existing product without rewriting it 💻 Full-stack SaaS: Python, FastAPI, Node.js, Next.js, React, TypeScript, Laravel and Ruby on Rails 🚀 SELECTED WORK 🔹 Pearson Labs, YC-backed legal AI: I built the FastAPI backend and the LangChain and LangGraph agent flows for a multi-agent RAG platform where law firms work with thousands of confidential documents, with Pinecone multi-tenancy so each firm only sees its own data. 🔹 AI Voice Calling Agent: I built a real-time call-center agent on Twilio with speech-to-text, an LLM and voice cloning that detects caller intent and emotion. 🔹 n8n CRM Automation: I built a WhatsApp AI chatbot and a website voice agent that answer from live CRM data, plus automated social media posts. 🔹 AI Avatar Voice Agent: I built a talking-avatar app on LiveKit, HeyGen and Deepgram for AI teacher and coach use cases. 🔹 Cheddar Up: I built core features for a US group payments platform trusted by 100K+ groups. React, Next.js, Ruby on Rails. 🔹 Mrsool: I built backend features for one of Saudi Arabia's largest delivery platforms, with 15M+ customers. Ruby on Rails, Node.js. 🔹 SaaS products with Laravel, Vue.js and Rails: Procurement Express, EVALARM, Grundsteuer, Pushdocs, InboxFreedom and REI Complete. 🛠️ HOW I WORK 1️⃣ A small working version on your real data first 2️⃣ Access enforced on the server and in the database, never by the AI 3️⃣ Real test questions and answer logs to measure AI quality 4️⃣ Deployment, monitoring, docs and handover ⭐ WHAT CLIENTS SAY ⭐ "Quality and service is top level. He by far exceeded my expectations." ⭐ "Highly knowledgeable in OCR and preprocessing." ⭐ "Excellent support and knowledge to achieve all the work." 📍 Based in Germany, CET, with easy overlap for EU, UK and US clients. 📩 Tell me what you're building. I'll reply with the questions that matter for your scope and an honest view of how I'd approach it.