Hey, I’m Blainer Costa, a product builder.

Over the past 10 years I've built digital products end to end, from first prototype to production. Today I'm Head of Innovation at a confidential company and run Dunk Labs, my product studio.

Anyone can build now. Almost no one builds it right. I help founders and teams get unstuck at the prototype and ship what actually works.

I also write a free newsletter, host AI Creators, a free community, and run The Cave, a closed club for builders.