Petr is a developer with a special interest in Jakarta EE (committer for Jakarta Concurrency). His major business interest was always development of web applications for big companies and banks, but he used Java for everything from Java Card, desktop app in Swing, applets, data preprocessing for data mining, databases, games, interpreters, programming on mainframes, etc. He likes all the achievements of last decades like SCRUM (Agile in general), UX, TDD, CI/CD, virtualization. He got a PhD in Artificial Intelligence and Cybernetics from the Czech Technical University.