Kostiantyn Koval is a passionate software engineer with six years of experience. All this while, his main passion and work has been building iOS applications. During this time, he has build many applications, including games, enterprise apps, and big platforms. He fell in love with Swift from the beginning and keeps expressing it by sharing it with the world.
Except iOS, he is also interested in other technologies and languages such as Scala, Clojure, LLVM, Ruby, JS, Web, and others.
He is also the author of a Swift High Performance book, Packt Publishing. He loves open source and blogging. You can find him on GitHub at https://github.com/kostiakoval, his blogs can be read at https://medium.com/@kostiakoval or http://kostiakoval.github.io, and his Twitter handle is @KostiaKoval
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