David Šimák is JAVA developer from Zlín, Czech Republic.
He mainly develop applications for Android OS. He also develop Web Applications in ReactJS with JAVA backend, but has experience with JSF (JavaServer Faces). 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.