Portfolio
AI tools, data research, and personal software — built outside office hours. Everything here is something I wanted to exist and couldn't find.
What started as an attempt to build a stock-picking model turned into a reminder of who I am as an investor: boring and focused on the long term.Also: pulling in every single Warren Buffett letter was cool.
A retrieval model trained on 640,000 words I've published. You can ask it anything and it will answer with citations to the original pieces. Essentially, a ChatGPT built on top of my writing.
A Raspberry Pi chess companion built with my son so he could play without a screen. Phase 1: the board speaks moves aloud and listens for his response. Phase 2: a motorized board that physically moves the pieces.
Fed it my hot tub specs, the owner's manual, and every chemical my pool store carries. Enter test strip readings; it tells me exactly how much of each chemical to add.
A website for my wife's interior design business, Mindy Markowitz Design. Started in Lovable, finished in Claude Code — clean, image-forward, built for clients.