This page collects the projects I am actively ready to discuss with hiring teams. Each entry links to the write-up and the source repository or reproducible code.

Featured portfolio projects

Project	Focus	Source
Ames housing price modeling	Stacked Ridge, XGBoost, and LightGBM ensemble for housing price prediction with residual and feature analysis.	Repository
Credit card fraud thresholding	Fraud detection on an imbalanced benchmark, with decision-threshold and cost-curve analysis.	Repository
California housing dataset audit	Regression teaching project focused on unit of analysis, capped targets, geography, and baseline modeling.	Source script

Current rule

I keep this page intentionally narrow. A project belongs here only when the write-up, repository, figures, and public explanation are ready to be reviewed together.

Repository access

The current public GitHub profile is available at github.com/ndjstn. Individual project pages link to the relevant source repository, notebook, script, or reproducible code path.