Istvan holds a Master degree in Business Economy. He specialized in Human Resources, and worked in international projects for Nokia Corporation in Europe, Asia, Middle East and Africa. Afterwards, he gained a Teaching English as a Foreign Language certificate in Thailand, and started working in an international school in Cambodia - teaching English, Mathematics, Science and Physical Education for primary students. He is an International Yoga Alliance certified Yoga Teacher as well, and runs "Unfold. - Creative EFL Activities" - a page on Facebook and a channel on YouTube, where he shares classroom activities and teaching ideas."