I spent 9 years at Amazon figuring out when metrics actually mean something.

Causal inference, experimentation, and GenAI evaluation — written down for people doing the same work. Joining Taskrabbit as Senior Data Scientist in April 2026.

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LLM Fundamentals·Apr 2026Latest

RLHF and DPO: Alignment from Human Feedback

How we teach models to be helpful — from reward models and PPO to direct preference optimization and why DPO is simpler.

Apr 2026Quantization: Smaller, Faster, Still Good→Apr 2026Inference Engines and Serving LLMs in Production→Apr 2026Retrieval-Augmented Generation (RAG)→Apr 2026Mixture of Experts: Scaling Without the Compute→

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