Yiannakis was born in 1967, in Cyprus. After he graduated from high school in Cyprus, he moved to Russia for university studies. He graduated with a Bachelors degree in Mechanical Engineering and a Masters Degree in Engineering both from the State Technical University of St. Petersburg. Between 1993-1995 he worked with an international construction company as a Workshop Manager and then moved to a tourist firm as a Business Development Manager up to 1998, when he joined CosmoServe.  Yiannakis has graduated with an MBA (Master in Business Administration) from  the University of Cyprus in 2012.

Yiannakis is responsible for the Business and Banking Services and for liaising with our Russian speaking clients. He speaks fluent Greek, Russian and English.