Oleksandr Kaleniuk is the creator of Words and Buttons Online, a collection of interactive tutorials on math and programming. He works for Materialise as a senior software engineer...lihat lebih banyakOleksandr Kaleniuk is the creator of Words and Buttons Online, a collection of interactive tutorials on math and programming. He works for Materialise as a senior software engineer specializing in geometric algorithms.lihat lebih sedikit