Prior to joining Microsoft, Hussein was the Founder and President of Citex Software, a startup that is well-known for its open source mobile advertising platform. Before Citex Software, Hussein was the Chief Operating Officer of SySDSoft (acquired by Intel), a startup that offered software design services for major wireless product vendors. Before joining SySDSoft, Hussein was with Cisco Systems. While at Cisco, Hussein worked on the first generation of VoIP products and led the integration between VoIP and Layer 3 network protocols. His work on VoIP call routing is well recognized and has resulted in both patents and IETF standards. He has also led major projects in core routing.
Hussein has contributions to several standards bodies (IETF, ITU-T, and ETSI) related to VoIP and MPLS. In addition, Hussein co-authored several conference and journal papers and he has seven issued US patents.
Hussein received his BSc with Honors in Electrical Engineering from Cairo University, Egypt, in 1990 and his PhD in Computer Engineering in 1996 from North Carolina State University. In 2002, Hussein earned an MBA from San Jose State University, California.
In 1995, Hussein was a Visiting Researcher at the Institute for Open Communication Systems (GMD-FOKUS) in Berlin, Germany. In 2006 and 2007, Hussein was an Adjunct Lecturer at the Department of Computer Engineering, Cairo University, Egypt. In addition, Hussein occasionally consulted some of Egypt’s major organizations on strategic technology matters.