Ukrainian painter Artem Rogowoi works primarily in oil, often augmented with gold leaf. He also does smaller studies in gouache in which he plays with expressionistic color schemes.
Rogowoi studied at the Kharkiv State Art College and the Kharkiv Academy of Design and Arts. His work has been featured in numerous exhibition in Ukraine, the U.S. and Australia.
I can’t find a dedicated website for him, but some of the sites listed below have bio information as well as examples of his work. [Note: some of the images on the sites linked below could be considered NSFW.]