Aivars Kalvans holds the position of Lead Software Architect at Tieto Latvia and is working on Card Suite payment card system. During his more than 15-year career Aivars has been involved in a number of projects related to credit card issuing, acquiring and utility payments through mobile phones, ATMs and POS-terminals. When he is not writing C++, SQL and Python code for Tieto he does it for fun or spends time with his wife and 3 sons and trains in martial arts.