Hey,

I'm Antonio, a frontend engineer1 based in Zagreb, Croatia. Nice to meet you.

By day I'm a Principal Engineer at Bozic, and in the evenings I also run AS Agency, a one-person studio making websites for small businesses.

I like building interfaces that feel fast, and small tools that help coding agents see what I see. Lately that's ui-divergence-feedback and agent-usage-tray.

Say hi at @antoniosumak. I'm always up for a good project, or a good coffee.