Orest Stelmach is a mystery and thriller writer and the author of the Nadia Tesla series. His novels have been Kindle #1 bestsellers, optioned for film development, and translated into numerous foreign languages. Prior to becoming a full-time writer, Orest was an international  investment portfolio manager for twenty-five years. He is a graduate of Dartmouth College and the University of Chicago Booth School of Business.

Orest was born in Hartford, Connecticut in a close-knit Ukrainian-American community, and learned to speak Ukrainian before English. He studied Japanese at Cornell University under renowned linguist Eleanor Jordan, and as an exchange student at Keio University in Tokyo, Japan. He also has working knowledge of half a dozen other European languages.