Hi, I'm Helen

I'm a Product Manager at Coinbase, building and growing 0→1 products across consumer and B2B. I enjoy distilling complex problems into simple, delightful, and easy to use experiences.

NYU Finance & Data Science grad. NYC based 🗽 and Seoul 🇰🇷 native. Chronically documenting my life on Portra 400. Reach me at helenhnshim@gmail.com or find me on LinkedIn, X, and GitHub.

Projects

Financial Research Agent workspace with suggested research questions and a question input

Financial Research Agent

Try it

Pressure-test an investment thesis against earnings reports, with evidence and suggested follow-up investigations. Built with GPT-6 Astra and GPT-6.1 Sol.

Orange Eclisse lamp glowing on a dark background

Eclisse: an interactive model of light

Try it

An interactive study of light and movement. Built with GPT-6.1 Sol and GPT-6 Astra.

Writing

ChatGPT Plus: From upgrade to habitEssay

ChatGPT Plus: From upgrade to habit

What my first Codex session revealed about premium activation — and what I'd change about the subscriber journey

The flywheel Anthropic hasn't designed forEssay

The flywheel Anthropic hasn't designed for

A teardown of Claude's enterprise adoption gap — why non-technical workers stall before their first win, and what I'd build to close it

Building faster than design cycles: 1-tap tradePrototype

Building faster than design cycles: 1-tap trade

Prototyped a 1-click trading experience to validate user behavior in days, replacing specs with working builds and reshaping how I build AI products

What I've Shipped

Decentralized Trading

Decentralized Trading

Expanding tradable assets from hundreds to millions of tokens directly on Coinbase

International Exchange

International Exchange

Launched Coinbase International Exchange, Coinbase's first leveraged trading product

Mobile & Web Architecture

Mobile & Web Architecture

Coinbase app-wide redesign, making trading simpler and easier for millions of users