Vassilis Diamantis's Email Addresses & Phone Numbers

📖 Summary

Experienced Network Engineer in designing, implementing securing and troubleshooting complex networking infrastructures. Have worked on projects related to enterprise and service provider networks as an individual or as a team member. I' am certified by Cisco as a Network Professional (CCNP) and hold a B.Sc. with 1st class honours in Computer Science. Specialties • Networking protocols/technologies: Mpls(Traffic Engineering, L2/L3 Vpn), Bgp, Ospf, Isis, Eigrp, Rip, IPsec, Gre, SSL Vpn, Hsrp, Spanning Tree, Vtp, Vlans, Metro Ethernet, Bras, Firewall zones, Protocol inspection, Ids/Ips • Cisco equipment: ASR 9000, GSR 12000, 10000, 7600, 7200, Catalyst 6500, 4900, 4500, 3700, 3500, 2900, ISR 2800/2900/3800/3900, ASA 5500, PIX 500, Aironet 1100/1200 Access points • Cisco IOS, IOS XE, IOS XR • Juniper equipment: E320 BRAS, M10, MX 960 Series routers, SRX 1400/3400, EX 4200/4500 • Arista: 7050 L3 switches • Citrix Netscaler • Linux/Unix: Red Hat and Debian based, Sun Solaris, Web/Dns/Dhcp/Ftp Mysql servers, Cacti, Rancid, IPtables, OpenVpn • Scripting/Programming languages: Bash/Perl, C, C++IT Networking Engineer @ IT Networking engineer for Tradition's network and systems. Involved in Design, Planning, Implementation and troubleshooting. Following are the duties and technologies that I'm involved. . Designing /Integrating new technologies/projects in test environments and bringing them to production . Planning and implementing requests for configuration changes for running projects . On-boarding: Connecting new customer's to the company's infrastructure. . Core/Distribution/Access network: L3 switching, Ebgp, Ibgp, Ospf, rerdundancy and load balancing . Firewalls: Policies, clustering, optimization, IPsec vpn . L7 load balancing . Virtualization: ESX server deployment, new vm deployment, clustering . Automation: Scripting of platform/device checks. . Writing technical documentation and keeping up to date change management and incident systems . Troubleshooting in all 7 layers From October 2013 to Present (2 years 3 months) London, United KingdomIP Network Engineer @ IP Network Engineer for Wind Hellas network. Following are the duties and technologies that I'm involved • Operation and maintenance of the IP Core, Access and Peer Network including troubleshooting, configuration and optimization of Cisco/Juniper networking protocols and equipment • Integration and testing of new services and elements • Implementation of written and scripted(Bash, perl) procedures for preventive maintenance and network troubleshooting • Administration of Linux servers hosting networking management tools • Provide technical training to members of other departments • Technologies/Protocols/Devices: OSPF, ISIS, BGP, MPLS, Metro Ethernet, Spanning Tree, Vlans, Firewalls, Cisco ASR 9000, GSR 12000, 10000, 7600, 7200, 6500, 4500, Juniper E, M, MX Series From August 2010 to July 2013 (3 years) Network Engineer @ Design/Implemetation/Support of enterprise data networks From November 2009 to August 2010 (10 months) Network and Presales Engineer @ Network and Pre Sales Engineer for Syscom S.A in projects with Cisco equipment for enterprise customers of the shipping and oil industry. • Proposed and implemented new client services which brought new customers and maintained old contracts • Performed new installations and optimized existing ones in terms of security, high availability, routing, quality of service, wireless • Designed and implemented new redundancy and load sharing Lan/Wan schemes for clients • Provided technical training and presentations to customers • Administered Linux/Microsoft services like Active Directory, Proxy, Iptables, Dns, Mail • Technologies and protocols: IPsec/Gre, Firewalls, IDS/IPS, Spanning Tree, HSRP, EIGRP, Vlans, Cisco ISR routers, Catalyst switches, Aironet Access Points From September 2008 to October 2009 (1 year 2 months) Network and Systems Administrator @ Network and Systems Administrator for the company's and client networks (Travel agencies and Hotels). • Extended a nationwide IPsec/Gre Vpn to numerous locations • Redesigned the company’s data center with L2/L3 redundancy and firewall zones • Supported and Integrated Cisco Lan/Wan customer networks • Integrated Linux/Microsoft services like Active Directory, Web and Database servers, Dns, Radius • Integrated and supported numerous Wireless Hotspots • Technologies/Protocols/Operating Systems: EIGRP, OSPF, IPsec/Gre, Firewalls, Spanning Tree, Vlans, Cisco ISR routers, Catalyst switches, Aironet Access Points, Debian/Centos Linux, Sun Solaris, Windows 2003 Server From September 2006 to May 2008 (1 year 9 months) BSc Hons, A+, Computer Science @ University of Hertfordshire From 2002 to 2005 Vassilis Diamantis is skilled in: Cisco Technologies, Firewalls, BGP, MPLS, OSPF, Operating Systems, RIP, ISIS, VPN, Spanning Tree, Solaris, EIGRP, Security, Routers, Switches