A human on the internet

JOHN
ESTERLINE.

Hello,
internet.

Making useful things.
Following interesting questions.
Occasionally getting outside.

01 /

The short version

I like figuring things out.
Then making something useful.

I’m John. I build little tools for real life and spend a lot of time thinking about AI agents, memory, and what software can take off our plates.

That curiosity tends to turn into projects: a better way to find interesting jobs, a place to keep travel memories, or another experiment on the web.

Away from a screen, there’s golf, travel, and a long list of things still to learn.

Current rabbit holes

AI agents Useful automation A better golf swing

02 /

A few things
I’ve put on the internet.

Product lessons from building with AI agents: choosing the problem, earning trust, and taking ideas from zero to one.

Public career listings, gathered and ranked to make the interesting opportunities easier to find.

A home for photos, places, and memories from our honeymoon.