Known as Mr. Beret, Tom and Wsilva among other nicknames. He is a ZCE PHP 5.3 certified, author of the book Aprendendo Docker, do básico à orquestração de contêineres, published by Novatec. In english: Learning Docker, from the basic to container orchestration. Co-organizer of the Docker meetup in São Paulo, he has background in telecommunications, VoIP and Linux. Has contributed with support in forums, Slack and Telegram groups, giving talks to the PHP, Python and Go communities.