"Eugen was an amazing mentor. He understood both the theory and practice of building AngularJS and Ionic applications. In a short, one hour session I learned several new techniques that I can start using immediately. He also speaks clearly and explains things in a way that makes sense. In addition, he was very organized. While we went through the session, he compiled a list of references and notes that I could refer to in the future. These references were very valuable. I definitely recommend Eugen to anyone considering working with him."