Costa Mazzis is an accomplished entrepreneur, best known as the founder and chief executive of Barcelos, a South African restaurant brand famous for its flame-grilled chicken and peri peri sauces. He started Barcelos as a family restaurant in Pretoria in 1994, a venture that has since expanded to a global presence, with outlets in numerous countries including in the UK, Canada, Brazil, Jordan as well as across multiple countries in Africa. His business strategy includes a closely guarded family secret regarding the restaurant's signature marinade, a recipe known only to himself and a trusted partner.

Mazzis' journey began with a background in Structural Engineering, but he soon realized his true passion lay in the food industry. His entry into this field was in 1983, and he has never looked back since. He credits his success to his passion for food, his dedication to hard work, and his commitment to providing opportunities for others, particularly the less privileged.