Mobeen Tahir, CCIE No. 12643 (SP, R&S), is a network consulting engineer with the World Wide Service Provider Practice team in Cisco. Mobeen started his career in the communication industry in 1993 with France-based Alcatel. While working for Alcatel between 1993 and 1998, Mobeen engaged in assignments ranging from manufacturing voice switches to planning large-scale telecommunications projects. He joined Cisco in 1999 and has worked on the development testing of the IOS XR operating system for c12000 and CRS-1 platforms. His current role as a network consulting engineer at Cisco consists of designing and deploying NGN networks in the service provider space. Mobeen specializes in IOS XR-based deployments and provides consulting services to Cisco customers. Mobeen has attained master of engineering and B.S.E.E degrees from institutions in Canada and the United States. He lives with his wife and two children in Cary, North Carolina.