John Wasilczyk - is a video game producer. John Wasilczyk began his career in 2011 and has worked for companies such as Infinity Ward, Sledgehammer Games, Aspyr Media, Activision Blizzard and Aspyr. John Wasilczyk's first game was Call of Duty: Modern Warfare 3 which was released 9 years ago. Best Game John Wasilczyk contributed to was Call of Duty: Modern Warfare 3. John Wasilczyk's latest work is Call of Duty: Modern Warfare 3 which was released 9 years ago.