Kacper Szarkiewicz

Frontend Engineer

let's build together

I build dApps. I specialise in Frontend and UX in Web3. Design engineering is my hobby.

The Standard for DeFi Numeric Inputs.

Something native UIs get right that most web tooltips don't.

An iMessage composer built with group-focus-within and group-has - tray collapse, icon crossfade, and conditional pickers, all CSS-only.

How browser stacking context really works - from z-index traps to the top layer.

Stay updated with my latest articles and projects. No spam, no nonsense.

You can see more of my work on X, more of my code on GitHub, and my videos on YouTube.