Hasan M.

AI/ML Data Engineer | AI Agent Developer | RAG & MCP Server Expert with 8+ years of experience building production LLM applications, AI agents, RAG systems and scalable data pipelines. Top Rated on Upwork, delivering end-to-end AI solutions for clients in the USA, Canada, Australia and the UK. Most AI projects never make it past the prototype. The chatbot hallucinates, the data is messy, latency and costs explode, or the AI can't connect to your real systems. I take LLMs, AI agents and vector search out of the demo stage and build them into secure, fast, production-ready applications. --- Core Services --- 1. RAG Development & AI Knowledge Systems Production RAG pipelines with hybrid search (dense + sparse), custom chunking and re-ranking (Cohere/BGE) on pgvector, Pinecone or Qdrant Custom AI chatbots and AI assistants trained on your PDFs, databases, CRM or help desk, with source citations, hallucination control and access security 2. AI Agent Development & MCP Servers Custom Model Context Protocol (MCP) servers in Python and TypeScript that let Claude, ChatGPT and Cursor securely query databases, call APIs and run tools Autonomous AI agents and multi-agent systems using LangChain, LlamaIndex, OpenAI API, Claude API and n8n 3. Data Engineering & Data Pipelines ETL pipelines in Python and SQL with PostgreSQL and BigQuery Data cleaning, data modeling and vector database setup to make your business data AI-ready 4. LLM Fine-Tuning & MLOps LLM fine-tuning with LoRA/QLoRA (Llama, Mistral) using PyTorch and Hugging Face Model deployment, monitoring and inference cost optimization with Docker, vLLM, AWS and GCP 5. Machine Learning & AI Analytics Predictive models for forecasting, lead scoring and customer analytics Data dashboards that turn raw data into clear business decisions 6. AI Automation & Full-Stack AI Apps AI workflow automation with n8n and Make (Integromat), connected to HubSpot, Shopify, Gmail and Slack AI-powered SaaS products, admin portals and dashboards in NextJS, React, NodeJS and Laravel --- Recent Work --- 9-agent AI lead generation system: Built with Claude API, Make (Integromat), Apollo, HubSpot and Vapi AI voice agents. Analyzes business websites, writes personalized outreach and runs AI phone follow-ups automatically Staff vetting & screening platform (UK): Leading a team of 4 to 5 engineers on a compliance platform that handles sensitive identity and background-check data Shopify + HubSpot B2B data integration: Custom app for an Australian pharma wholesaler, including diagnosing and fixing a data sync issue that created duplicate customer records AI translation chatbot: Multilingual AI assistant with real-time translation n8n AI outreach automation: End-to-end lead capture, data enrichment and outreach pipeline --- Why Clients Hire Me --- 8+ years of senior engineering: Clean architecture, security and scalability, not just prompt wrappers Full lifecycle in one person: Data engineering, vector databases, LLM fine-tuning, backend and frontend Team leadership: I lead a development team, so my code is documented and easy to maintain Regulated data experience: Compliance, healthcare and pharma projects Clear process: Fixed milestones and short video updates so you always see progress Tech stack: Python, SQL, TypeScript, LangChain, LlamaIndex, OpenAI API, Claude API, MCP, Hugging Face, PyTorch, vLLM, BigQuery, PostgreSQL, pgvector, Pinecone, Qdrant, Docker, AWS, GCP, n8n, Make (Integromat), NextJS, React, NodeJS, Laravel, PHP Send me your project details and I'll reply with a clear plan, timeline and quote within 24 hours.