Jakub Sledz product designer

I'm a product designer who builds. Most projects start with talking to real people, turn into prototypes I can put in someone's hands, and end with the numbers that say whether it worked. I document the whole way through, which is why this page reads like a file.

The work runs from consumer mobile apps to conversion-critical websites, usually owning the whole problem, from the first interview to the metrics after launch. I prototype in code when that gets the answer faster, often with an AI copilot, and I try to leave every team a tidier design system than I found.