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Leon-Sander/README.md

Hi, I'm Leon 馃憢

Machine Learning / LLM Engineer. I build LLM systems end to end, from architecture and application logic through to production: self-hosted inference (vLLM), agentic workflows (LangGraph), RAG, and high-volume document AI, with the MLOps to run it reliably.

What I work on

  • Self-hosted, privacy-first LLM systems (vLLM, on-prem GPU inference)
  • RAG and agentic pipelines (LangGraph, MCP, vector databases)
  • Document AI at scale (OCR, structured extraction) and voice/ASR
  • MLOps: Docker, GitLab CI/CD, Airflow, monitoring

Selected projects

Reach me

LinkedIn 路 leonsander.com 路 YouTube 路 leonsander.consulting@gmail.com

Stack: Python 路 vLLM 路 LangGraph 路 RAG 路 FastAPI 路 PostgreSQL/pgvector 路 Chroma 路 PyTorch 路 Hugging Face 路 Docker 路 Airflow

Pinned Loading

  1. Local-Multimodal-AI-Chat Local-Multimodal-AI-Chat Public

    Self-hostable multimodal chat with local LLMs (Ollama/OpenAI): PDF RAG, image chat, and Whisper voice, Streamlit + Docker.

    Python 206 114

  2. langchain_faiss_vectorindex langchain_faiss_vectorindex Public

    Telegram bot that answers questions over your PDFs using retrieval-augmented generation (LangChain + FAISS).

    Python 48 20

  3. Youtube-Notion-Summary-MCP-Server Youtube-Notion-Summary-MCP-Server Public

    MCP server that summarizes YouTube videos into Notion.

    Python 1

  4. Fast-Whisper-Websocket Fast-Whisper-Websocket Public

    Real-time speech-to-text over WebSocket using faster-whisper.

    HTML

  5. KV-Cache-Calculator KV-Cache-Calculator Public

    Calculate the KV-cache memory footprint of transformer models, useful for GPU/VRAM sizing.

    Python

  6. Reddit-QnA-to-Notion-MCP Reddit-QnA-to-Notion-MCP Public

    MCP server that searches Reddit for answers and saves Q&A sessions to Notion.

    Python