Garrett Siegel

Design Engineer building interactive, performant web experiences.

I build interactive, performance-first web experiences for the editorial and product web. Currently on ESPN's Visual Storytelling team, where my work has reached millions of viewers and won numerous awards.

Spent the first half of my career as a graphic designer before moving into engineering. That shapes how I approach every project - typography, motion, and craft are priority, not finishing touches.

Author of open-source tools like Sentinel (an AI agent security scanner) and PromptKit (an AI coding config generator) - built to solve workflow problems I ran into on real projects.

What I do

Editorial Storytelling

Longform interactive features for ESPN - 35+ shipped stories reaching millions of fans.

Frontend Development

Interactive, performance-first web experiences for the editorial and product web.

Data Visualization

Charts and interactive graphics that make numbers tell stories - D3, Chart.js, and custom SVG.

Motion & Interaction

GSAP, WebGL, and the small details that make an interface feel alive.

Design Systems

Component libraries, tokens, and templates built to scale across teams.

AI & Developer Tooling

Agent tooling, guardrails, and open-source CLIs that remove friction from real workflows.

Selected work

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CodePass

Published on npm

Terminal harness that hot-swaps between AI coding agents - Claude Code, Codex, opencode, Cline - carrying a shared handoff file so you never lose context when a rate limit hits.

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