Rafal LeszkoRafal Leszko is a passionate software developer, trainer, and conference speaker living in Krakow, Poland. He has spent his career writing code, designing architecture, and is a tech leader in a number of companies and organizations, including Hazelcst, Google, and CERN. Always open to new challenges, he has given talks and conducted workshops at numerous international conferences, including Devoxx and Voxxed Days Read More Read Less
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