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David Šimák is software developer from Zlín, Czech Republic. 

He mainly develop applications in Java, especially for Android OS. He also develop Web Applications in JSF (JavaServer Faces), where he also use html, CSS and JavaScript. For database he use Room (which provides an abstraction layer over SQLite) for Android apps and on server based apps he use MongoDB.

He work as programmer in Elisoft s.r.o. where he develop EKONOM účtenka, but also working on his own projects and sometimes work as freelancer.