Szymon Chmal

Szymon Chmal builds developer tools as a React Native Expert at Callstack. He is the creator of Rozenite, Harness, and Voltra, focusing on making app delivery faster and solving complex engineering constraints.

He leads the Toruń Web Development Meetup to help local engineers share knowledge. On stage, his talks cover everything from avoiding hype-driven development to building custom React renderers that translate JSX directly into SwiftUI.

Szymon got his start in programming as a kid, driven by an early fascination with computer games.