Responsible for working as part of a team that is continually improving the way it delivers its IT and networking services. More specifically:▪ Acting as the technical escalation point within the networking team.▪ Prioritising and troubleshooting complex network and systems issues, ranging from low-level hardware right through to application level.▪ Providing network support to complex WAN and LAN networks.▪ Completing hardware implementations, upgrades and repairs.▪ Securing network systems by enforcing policies and monitoring access to them.▪ Installing and improving network equipment.Main Projects:▫ Eurobank: Network Security administrator. Installation, configuration and administration of Firewall (Cisco ASA & PIX) following the bank's information security policy. Provide support to internal users.▫ Motodynamiki: Implementation of site to site VPN redundancy.▫ Hellenic Police, Fire Service and Coastguard: Implementation of a highly available and secure network infrastructure for new Web site hosting various public services (Cyberoam and Watchguard Firewalls, IBM switches) as well as Disaster Site Implementation

Maintaining computing environment by identifying network requirements, installing upgrades and monitoring network performance by:▪ Establishing network specifications by conferring with users; analysing workflow, access, information, and security requirements; designing router administration, including interface configuration and routing protocols.▪ Securing network by developing network access, monitoring, control, and evaluation; maintaining documentation.▪ Upgrading network by conferring with vendors; developing, testing, evaluating, and installing enhancements (Cisco, HP, Fortinet, Dell).Main Projects:▫ Redesign of internal WAN and LAN network▫ Design and implementation to replace single core switch (Cisco 6509) witha cluster of high available and redundant pair of HP switches (HP 10508)

As member of the Network Security Department being responsible of ensuring the security of network from threats originating from inside and outside an organization. In addition, frequent audits were performed to ensure that the security policies are up-to-date and are being followed and take corrective steps where there are breaches.Main Projects:▫ Eurobank: Member of Network Security Department, installing, configuring and administrating of Firewalls (Cisco ASA and PIX) following the bank's information security policy as well as users' support.

▪ Designing the network, including making decisions about the type of network that best suits the needs of the company, setting up the network by installing the hardware of the network and configuring the files or databases, hosts, routers, and network configuration servers (Catalysts 6500 series, Catalyst 4500, Router 3800, Router 2800, ASA and PIX firewalls etc.) according to the security policy and finally maintaining the company's network by adding new host machines, administering network security and services and troubleshooting network problems.▪ Providing support to internal users and forecast any needed improvements and implementing any changes.

As a consultant, the responsibilities involved developing, designing and delivering networking and IP Telephony solutions,presales and second-level supportMain Projects▫ Alpha Bank: Design and implementation of highly available and secure data center network infrastructure that served the banking system for Alpha Bank Subsidiaries and also implementation of the disaster data center network.▫ Korres S.A : Redesign and implementation of the data and voice network infrastructure with emphasis on security and VPN connections through internet with remote sites.▫ Eurobank : Implementation of highly available and secure network infrastructure that serves the banking system for Balkan subsidiaries.▫ EXAE: Implementation of a temporary Cisco IP Telephony solution for more than 350 users, before installing the final IPT solution and relevant applications.▫ INFOTE: Design and implementation of a highly available and secure network infrastructure that serves INFOTE customers for accessing and using the Greek directory ▫ SKAITV: Design and implementation of a highly available and secure network infrastructure to serve Skai TV users and partners.▫ ANTENNA: Implementation of Cisco IP Telephony and Cisco IP Contact Center Express

▪ Design of networking solutions for customers▪ Presales support▪ After Sales support Main Projects▫ AIA (Athens International Airport): Implementation of Cisco IP Telephony▫ Athens 2004: Member of TOC and creation of network configuration templates▫ EMY: Design and implementation of network infrastructure for EMY's new WEB site▫ TELLAS: Implementation of LAN and Cisco IP Telephony▫ Ministry of Enviroment:Consulting services for LAN (operation, maintenance, management)▫ EDUNET: Reengineering and installation of equipment all over Greece▫ Korasidis S.A.: Design and implementation of BGP Multihoming

Main Projects▫ OTEGLOBE:Implementation of multiservice, multinational network based on IP and ATM▫ SYZEYKSIS: Implementation of pilot phase for interconnection Greek Public Sector▫ COSMOTE S.A.: Redesign company's data network▫ STET S.A.: Design and implementation of an ISP consisting of more than 50 nodes

▪ Networking Technologies: TCP/IP, IPX, DECNET, ISDN, LANE, BRIDGING, X25.▪ Routing/WAN protocols: RIP, EIGRP, OSPF, PPP, HDLC, X.25.▪ Services: VoIP, VPN.▪ Platforms:Cisco routers, Cisco access servers, Cisco hubs and catalysts, 3Com Gigabit switches, Cisco Secure, Resource Manager Essentials.▪ Customer Training

▪ Synchronous/asynchronous data communications (E1, HellasCom, Frame-Relay, ISDN, Leased/Dialup Lines). ▪ Modem setup for both dialup and leased line connections – Voiceband / Baseband (Nokia, Multitech, Microcom,Zyxel, US Robotics etc.).▪ Routing (RIP, IGRP, EIGRP, OSPF, BGP, mostly in Cisco Routers).