Alex Chan — I design AI, messaging and marketplace products.

I was the sole designer of eBay Messages, where buyers and sellers talk and make deals, with 36M messages a week. I also proposed and led eBay.ai Suggested Replies, AI reply drafts that 1.3M+ sellers have opted in to.

Open to new product design roles.

Featured projects

A seller's phone showing an eBay.ai suggested reply ready to edit and send.

eBay.ai Suggested Replies

Sellers feared AI would speak for them. I made it a private draft they approve, now eBay's standard for AI in Messages across 4 markets.

eBay.ai Suggested Replies

Sellers feared AI would speak for them. I made it a private draft they approve, now eBay's standard for AI in Messages across 4 markets.

eBay.ai Suggested Replies

Sellers feared AI would speak for them. I made it a private draft they approve, now eBay's standard for AI in Messages across 4 markets.

eBay Messages

Moving 36M messages a week to real-time conversations without breaking the inbox longtime sellers ran their businesses on.

eBay Messages

Moving 36M messages a week to real-time conversations without breaking the inbox longtime sellers ran their businesses on.

eBay Messages

Moving 36M messages a week to real-time conversations without breaking the inbox longtime sellers ran their businesses on.

Voice Teleprompter

A personal project, rebuilt from a tool I first made at eBay. After a question, presenters lose their place and the point they still had to make. I designed and built a tool that keeps both.

Voice Teleprompter

A personal project, rebuilt from a tool I first made at eBay. After a question, presenters lose their place and the point they still had to make. I designed and built a tool that keeps both.

Voice Teleprompter

A personal project, rebuilt from a tool I first made at eBay. After a question, presenters lose their place and the point they still had to make. I designed and built a tool that keeps both.

See all projects

How I design AI

Five rules from shipping AI at eBay and building my own tools.

Read the essay: Evidence, not verdicts →

Evidence before action

AI acts only on strong signals. Otherwise it stays quiet.

eBay.ai Suggested Replies

The person decides

AI drafts; people send. Nothing goes out in someone’s name without them.

eBay.ai Suggested Replies

Show evidence, not verdicts

Sold prices and offer history, never “this is a good offer.”

Offer Insights

Say why, then step back

Every suggestion is labeled, explains why it appeared, and can be dismissed.

eBay Messages 2030 vision

When unsure, ask

A false yes hides the very gap the tool exists to catch.

Voice Teleprompter