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How things actually got built. The decisions, the dead ends, and what survived contact with real data.
How This Site Works: A Tour Under the Hood
This site has no backend server, yet it runs on a real database with a login and an analytics dashboard. An interactive walkthrough of the architecture, the security model, and the admin console behind it.
Two-Stage Fraud Detection: XGBoost for Speed, an LLM for Reasoning
Why I put a reasoning layer on top of a classical model, and the case where the LLM caught a fraud the model scored a perfect 0.000000.
Automating a 37-Location ETL Pipeline (2 Hours to 12 Minutes a Day)
The win wasn't a clever model. It was deleting two hours of manual reporting a day and making the numbers trustworthy enough to forecast on.