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Chunyun Liu is a Senior Software Engineer at Motorola Solutions since April 2011, where responsibilities include network design and configuration for the Motorola Solutions Astro System, involving routers, switches, and firewalls. Prior to this role, Chunyun Liu worked at Motorola from June 1999 to February 2011, holding positions such as Senior Staff Software/System Test Engineer and Software Engineer. Chunyun Liu holds a Master of Science in Computer Science from DePaul University, completed between 1997 and 1999, and a Bachelor of Science in Mathematics from Dalian University of Technology, obtained from 1984 to 1988.