Business Arkadiusz Grądkowski, Holicon Contact Center 20 February 2006 Grądkowski was educated in Vienna, and has worked for Sitel Polska and Call Center Poland. Grądkowski is fascinated with technology gadgets and motorcycles. He has a four-month-old daughter. More from Business All Yesterday 88.3% of Poles choose products from promotional flyers when shopping 2 days ago Poland prepares major highway upgrades as congestion grows 2 days ago Paid DataWalk secures U.S. patent protection for AI technology