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Henry Gardner

I'm Henry, an ML engineer. I'm the founder of the app The Card Caddie, optimizing credit card rewards. I spent nine months stress-testing it across the world: 36 free hotel nights, a stack of free flights, covered by points it helped me earn. I care less about whether something demos well and more about whether it does something real once it's out in the world.

The fuller story: Triple Majored in CS, Math, and Stats at the University of Rochester and Master's in Data Science from UC Berkeley earned while working full time. I've shipped UAV deployment systems at Raytheon, sustainability models at The Revivas, and led the entire agentic media product at NSMBL.

I love maps. This isn't a resume, it's a career globe. Spin it.

Education

Experience

Projects

The Card Caddie screenshot

The Card Caddie

Maximize your credit card rewards

A website, app, and browser extension that recommends the best credit card to use when checking out (online or in-store) to maximize rewards. Set your cards once; it handles everything else.

  • Website
  • Browser extension
  • iOS App
wifi.live screenshot

wifi.live

Real-time WiFi speeds, mapped

A crowdsourced map of internet speeds at cafés, airports, hotels, and co-working spaces around the world. Filter by venue type, browse connection quality, and get directions to any place on the map.

  • Website
  • Real-time crowdsourced data
A guitar I built out of duct tape

I love duct tape.