Tristán was born in Mar del Plata in 1961. He studied Economics and Sociology at the Catholic University of Argentina and earned a Master's degree in Communication Business Management from the University of Navarra. He has worked in economic journalism since 1988, in economics and finance media, and also in media management, having directed business magazines and specialized websites. As a professor, he has taught economic journalism, media management, and professional ethics at the Catholic University of Argentina, the University of Salvador, and the [unspecified institution]. Universidad Austral.