Jonathan Fernandez, known professionally as John Barsik, is an Argentine DJ. A native of Buenos Aires, he started his career in 2011, performing at clubs such as Confucio, Pandemia, Raw and Vox. After earning a degree in music production in 2012, he began dabbling in techno music and other genres of electronic music. Word of mouth spread the news about his skills and Barsik found himself being invited to play at some of the most reputed clubs on the Argentinian scene. He released his first album, titled Various Artists 01 in 2014 and followed it with the EP Complex Obsession in 2014. His next releases, Tone 2, Trigonal and Appearance followed over the course of the next two years. 2017 saw the release of two EPs, Encoder and Motor, and the singles "Cthulhu" and "No Industries." Barsik's third EP, The Hypnotist, hit the shelves in 2018.