Network&TelephonyAdministrator

[Archirodon](http://www.archirodon.net/), having earned its reputation as a reliable and respected international contractor for more than a half century in the Engineering, Procurement and Construction (EPC) market, continues to create value to its stakeholders by executing complex EPC projects worldwide, in recognition of its superior standards of performance. We have an outstanding record in completing major Energy, Marine, Infrastructure and Defense & Security projects around the globe and we pride ourselves on delivering over the years the kind of reliability and trust that the client has the right to expect from a major EPC contractor. Are you ready to travel, be part of and learn from an international dynamic team? Are you an enthusiastic, self-motivated, resourceful and highly skilled professional, looking for a role to get passionate about? Would you like to be part of a dynamic EPC leader with global presence? We’d like to meet you! You will work with state-of-the art technologies to ensure continued function and administration of all IT network and IP telephony system (Cisco Call Manager) across the Group (including both Country Offices and site operations). You will assess and improve the network hardening, and you will manage security monitor systems (SIEM) with goal to ensure systems’ health security posture. What you will need to do: * Ensure the smooth, secure operation and optimization of the Group’s Network, VoIP and Firewall infrastructure (including routers, switches, firewalls, vlan, cabling, licensing, upgrades, troubleshooting etc.) * Act as the primary technical owner for Cisco Call Manager (CUCM), Cisco Collaboration Endpoints, and global IP Telephony deployments across Group offices and sites. * Troubleshoot complicated issues of CUCM / Cisco Collaboration Endpoints / ISE / Firewalling, focusing on voice quality, SIP signaling, and call routing performance. * Review daily health checks of both network devices and telephony clusters, taking c