Kostas Eleftheriou is a L'École fait du Bruit! at School is Loud!. They is proficient in English, French and Greek. Colleagues describe them as "As a colleague, Kostas Eleftheriou, has proven himself to be a remarkably responsible and talented professional. He is organized, efficient, extremely competent, and has an excellent rapport with all parties involved in our business. Kostas had always been a valuable member of our team, constantly striving to achieve and then surpass any goals set. Therefore, I highly recommend Kostas for any position or endeavor that he may seek to pursue." and "A great and reliable advisor. Leaving nothing to chance and always on the ball. Having witnessed Kostas achievements from the beginning of his career i am more than happy to work with him and also recomend him almost for any business development project. His deep knowledge of corporate tactics combined with his puctualty and his creativity make him an asset for business. The best part is that he is very usefull in all layers of company. From business development, Public relations, training, leading to revenue growth."