Kostas Tsalikidis was born on July 23, 1966. He worked for Vodafone Greece for almost 11 years, beginning as Switching Planning and Technology Manager. From 2001 until his death, he was responsible for all planning activities for the GSM, GPRS and UMTS Vodafone Panafon Core Network (Design, Architecture, Dimensioning, Ordering, Rollout, Interconnect, Optimisation). He was also responsible for all technology issues of the Core Network (GSM, GPRS functionalities implementation and Roadmap), and liaison with Vodafone Global regarding Vodafone Networks Evolution road-maps.