Petr Zaparka

The code is the easy part.

I write about what nobody teaches you: the judgment, the debugging instinct, and the honest reality of AI in a working developer’s life.

20 years building software for Skype, Jaguar, Expedia, and UK government systems where downtime wasn’t an option.

Developer Growth

Not new frameworks, but judgment. Knowing which problem is worth solving. Knowing when to say no. Nobody shows you how to think like a senior. I want to shorten that gap.

Honest AI Adoption

AI is a tool. Useful in the right situations, a liability in the wrong ones. I use it every day. I also know when to put it down and think for myself.

Debugging

The debugging instinct isn’t magic. It’s mental models and habits that experienced developers use without realising. I’ve spent a long time making those models explicit.

What I’m thinking about now

If any of this sounds useful

Whether that’s developing better technical judgment, getting faster at debugging, or figuring out how to use AI without losing your ability to think. I work with developers and teams on exactly that.

I had the pleasure of being coached by Petr, and it was a transformative experience. He helped me identify my professional goals and provided valuable resources to improve my focus. His friendly personality and attentiveness made the session engaging and productive.

Stefano Nebo, Fullstack Engineer