• Planning, installation and management of our Cisco (Switches and Routers) and Linux (Firewalls) based network infrastructure
• Planning, installation and management of our Debian Linux based server infrastructure
• Management of our VMWare based virtualization platform
• Administration of J2EE Application Servers and Web/Name/Mail-Servers
• Management of our VoIP System based on Asterisk, Freeswitch and Kamaillio
• General Troubleshooting and System Monitoring