Jil Barnak was an Atrean male in Starfleet during the 24th century. As a young man, he was married to Sindea Barnak. Sindea died sometime prior to 2336, a few months into their marriage, of a sudden illness. Following her death, Barnak resigned himself to a solitary life serving in Starfleet. (SCE eBook: Wildfire, Book 1) As of 2376, Barnak held the rank of lieutenant, and served as chief engineer aboard the USS da Vinci. (SCE eBook: The Belly of the Beast) He was survived by a sister, who resided on Atrea IV. (SCE eBook: Breakdowns)