I have began my professional career in programming since 2014, when I was a computer software engineering student at Kharazmi university. It has started by working as an android trainee in a digital magazine in my summer holidays. Continued by working in some startups and small size companies as an android developer till I was hired as android developer in Intek Co. As a full time android developer, I have worked in some projects like MPOS and payment transactions monitoring mobile application. As I am a curious and ambitious person like my MBTI type (ENTP), I have began to learn some basics of payment industry and other programming platforms. One of these platforms is iOS and swift programming language, because I have found out market's demands, that every application has to be run on both platforms. Later, I have become payment switch engineer, and working in switch maintenance team has motivated me to choose database and data science as my future professional career, and it is about a year that I have started learning data science in python and R language, and I wish someday I could work as data scientist.