I build the parts of a system that do not have a library yet. A game engine simulating a planet dying, a forecaster that has to admit when it is wrong, and a gallery that runs with the internet unplugged.
A Minecraft mod where Earth becomes a rogue planet, and the thing hunting you learns how you play.
The hard part. The Architect re-weighs its options as the world changes, so the cost of thinking had to stay inside a frame budget while everything around it was simulating a six phase collapse.
Predicts solar flares from live NOAA GOES data: which class in the next 24 to 48 hours, and how long until one arrives.
The hard part. Flares are rare, so a model that always says "none" scores well and is useless. The work was calibration and survival analysis, and reporting honestly how often it is wrong.
A local first digital gallery that runs on a network with no internet, installed by someone who is not technical.
The hard part. Every assumption a web application makes about being online had to come out, and the installer had to be a wizard rather than a README.
A cardiovascular risk model over the UCI Cleveland dataset, taken through CRISP-DM end to end.
The hard part. 303 patients is not many, and being accurate on average is not the same as being useful to a doctor, so the value is in the SHAP explanations rather than the score.