Aivars KalvansAivars Kalvāns is a developer, software architect, and consultant. He has been using Oracle Tuxedo (formerly BEA Tuxedo) since version 8 in 2003 to develop the Tieto Card Suite payment card system using the C++, Python, and Java programming languages During his almost 19-year career at Tieto, Aivars has been involved in many projects related to payment card issuing, acquiring, and utility payments through mobile phones, ATMs, and POS terminals. Read More Read Less