Jacek Rafalak has 20 years’ experience working with DB2 on the mainframe platform, database administration and software support. Working as System Engineer at Comarch S.A. in Gliwice.

IBM Certified Database Administrator DB2 9,10,11 for z/OS.
Poland DB2 Users Group board member (NGO organization).
International DB2 Users Group (IDUG) – EMEA Conference Planning Committee – Marketing Team 2015-2016
IBM Champion for Analytics 2013-2018