Sam Witteveen
Co-Founder of Red Dragon AI
Co-founder of Red Dragon AI and Google Developer Expert for Machine Learning with over 80,000 YouTube subscribers. Internationally known for technical deep dives on open-source language models, parameter-efficient fine-tuning (LoRA), LangChain agents, and multimodal reasoning.
Areas of focus
Professional niches
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Proof of Work
LangChain and LLM Agent Notebook Implementations
Authored dozens of open-source Jupyter notebooks with thousands of stars demonstrating tool integration, multi-agent debate, and local RAG retrieval pipelines.
Notebook workflows require refactoring into stateless services for production high-concurrency environments.
Context: LangChain, ChromaDB, Hugging Face Transformers, Ollama.
View missionLoRA and QLoRA Fine-Tuning of Open Weights Language Models
Produced rigorous tutorials examining adapter weights rank selection, NF4 quantization, gradient checkpointing, and evaluation across Llama and Mistral model families.
LoRA adapters require careful learning rate warmup to prevent catastrophic forgetting of base pre-training knowledge.
Context: Hugging Face PEFT, TRL, bitsandbytes 4-bit quantization, Llama-3.
View mission