John Chagistamatiou is a Greek citizen born in 1994 who has completed his military obligations. He has experience working in coffee shops, amusement parks, restaurants, and nightclubs in roles such as barista, area supervisor, waiter, bouncer, and chef's assistant. He is currently studying for a diploma in hairstyling from Atelier De Beaute in Athens. His fields of interest include marketing, hospitality, logistics, and communications.