Demetre P. Email & Phone Number

• Responsible for maintaining global networks encompassing AS21345, AS26282 & AS7583.• Manage LAN and WAN network devices spanning across 18 Data Centers globally.• Configure Network devices (Checkpoint, SRX, Cisco, F5) Data Center Wide for the launch of new products and services. • Upgrade and maintain connectivity to peer and transit providers.• Lead Network Engineer to upgrade F5 load balancers Data Center in order to support new services. • Maintain network security and load balancing equipment within the Symantec Infrastructure.• Traveled to various Data Centers worldwide(USA, Canada, UK, Singapore, Germany) to deploy/configure core network equipment.• Configure\​Maintain Cisco Nexus 5000 and 7000 series• Creating new flow configurations between global Data Centers including ACL’s on FWSM, ASA, and Juniper SRX firewalls.• Provide technical assistance in order to resolve network related issues that are client impacting.• Responsible for the creation and maintenance of all L2/L3 network diagrams.• Coordinate scheduled maintenance and emergency releases between ISPs and Data Centers.• Manage all remote sites WAN gateway devices through Global Crossing MPLS-based network.• Create Incident, Change and Operational Tasks while adhering to ITIL methodologies.• Accountable for all major network incidents that occur within the Symantec.Cloud infrastructure; including E-Mail (13 million users - 1billion email per day), Internet (2 million Clients - 1.4 billion Http requests per day), IM (50,000 users), Data moves (500 million SQL transactions per day) and Back-Up services (5000 Clients). 35,000 customers in over 100 countries.• Checkpoint (management) and Layer 3/Layer 2 configurations on routers and switches.• Working closely with project managers to get networking changes implemented on time.• Deploy and manage LAN/WAN network devices such as Cisco 6509, 3750, 2900, ASA 5525, SRX 240, 640, Nexus 3K, F5 BigIP Load balancers.

Thornhill, Ontario

• Responsible for the planning/design/implementation of the network infrastructure and building of new markets for TeraGo's network.• Complete provisioning within Operations change management guidelines on equipment such as routers, switches and OSS systems.• Work with the field personnel to perform test and turn-up activities.• Completed designing of Internet services including standard Internet, standard and custom VLAN/MPLS services, Metro-Area Networks and Intercity networks.• Completed the designing and provisioning on equipment such as Cisco routers: 1811, 3550-12T, 6524, 7603, switches: 2950, 3550-24, 3750 and OSS systems in support of client installations and within Operations change management guidelines.• Responsible for all backbone network capacity verification before customers services are implemented.• Participate in the selection of technology solutions, network elements and hardware from a design and provisioning perspective.• Capture design and assignments into TeraGo systems and data stores and ensure that they are completed and filed in accordance to standards.• Ensure TeraGo’s records/drawings etc. are kept accurate and up to date.• Accountable to ensure TeraGo’s operational data sources have up to date and accurate information.• Complete the provisioning on equipment such as radio’s, routers, switches and OSS systems in support of new network site projects and within Operations change management guidelines.

• Actively monitor and manage TeraGo’s National Backbone.• Provide internal training and mentoring as required to NOC Level 2 staff.• Involved in network design, maintenance, release/change management and capacity management.• Troubleshoot technical issues and problems using analytical methods to identify root causes.• Responsible for providing 3rd level NOC support as required.• Expert in using Routing Protocols such as BGP, OSPF, EIGRP, MPLS throughout the network.• Routinely analyze network performance and availability providing reports on the associated key metrics (MTTR, Availability, DPM, performance).• Provide internal training and mentoring as required to NOC Network Analysts staff.• Liaison with the Marketing, Engineering and Sales departments on new product and technology introduction initiatives.• Ensure TeraGo's records, drawings, etc. in Visio are kept accurate and up to date.• Take an active role in OSS systems evolution.• Other duties include activities involving network builds, network maintenance, release/change management and capacity management.

Thornhill, Ontario

• Part of the NOC team responsible for supporting over 6200 customers across TeraGo's national network 24/7/365.• Identified stability & feature issues with wireless vendors which resulted in bug fixes or new firmware releases.• Recognized for pro-active approach to monitoring the network and minimizing the impact of large failures.• Reviewed and resolved chronic issues.• Successfully executed sensitive projects to completion within deadlines.• Played a central role in network builds, network maintenance, release/change management and capacity management.• Monitored 3000+ network devices such as routers, switches, power systems, access servers and wireless radios using industry standard tools such as HP OpenView.• Involved in network design, maintenance, release/change & capacity management using MRTG.• Used smokeping reports for troubleshooting• Administered Mail, Web, and DNS servers including setup, maintenance, and support.• Maintaining and monitoring data center facilities and equipments to meet SLA uptime standards.• Provided customer support including daily backup procedures, testing network connections, equipment installation and turn-up and remote assistance.

Markham, Ontario

• Oversaw server configuration and optimization as the system grew from 3 to 25+ servers.• Implemented, maintained and upgraded DNS-Linux Servers, Blackberry Servers, Windows Servers, Exchange Servers, Active Directory, and file/print servers in domain.• Configured and troubleshot robust site-to-site and remote access VPN connections between head office and mobile workers.• Set up the web servers, Domain Names, and access rules for 12 internet sites, and collaborated with internet service providers to install multi-homed BGP internet connections.• Collaborated on developing and implementing enterprise-wide Security and Disaster Recover Plans that included tape backup routines, Cisco PIX and Checkpoint firewalls, and replication of core servers using NSI Double Take, network diagrams, system documentation, and off-site backup of critical data & equipment configurations.• Implemented automated traffic analysis tools to monitor network performance and identify bottlenecks with computers, services and devices.• Provides 24/7 on call support to branches and financial advisors across the country.• Relied upon to assume IT Manager responsibilities in the absence of the incumbent, providing direction and supervision to the team of three Network Administrators.