Kevin Rosenfeld
Software engineer building products, systems, and tooling
I design and build full-stack products, trading and automation systems, and the tooling around them, front to back, including the infrastructure and tests. Below are a few of the things I've built.
Featured work
All projects →Puxxle
LiveA daily word-puzzle game: Phaser 3 + TypeScript front end, Firebase backend, and an automated pipeline that curates 1,150 unique puzzles.
TypeScriptPhaser 3ViteFirebaseGitHub Actions
Portfolio Tracker & Strategy Bots
In progressA suite of TypeScript + Cloudflare Workers bots that track portfolios, run strategies, and simulate outcomes: serverless, scheduled, and observable.
TypeScriptCloudflare WorkersVitestCron Triggers