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Wiktor Kierzek is a seasoned IT security professional currently serving as a Senior IT Security Engineer at Żabka Polska since March 2021. With a diverse background in application security and software engineering, Wiktor has previously held positions as a Consultant at Codility and as an Application Security Engineer at both Currency One SA and Przelewy24. Wiktor's earlier experience includes software engineering roles at Microsoft and Cognifide, as well as development positions at Poznan University of Technology, eFRESH, and Perfect Games, where foundational skills in Flex and Java programming were developed. Wiktor holds a Master’s degree in Computer Science: Technologies of Software Development and a Bachelor of Engineering in Computer Science, both from Poznan University of Technology.