John Giannone Email & Phone Number

Wilton, Ct, Us

United States

Wilton, Ct

Responsible for research, design, testing, implementation and administration of reliable, efficient, and cost-effective network solutions that include Cisco routers, Cisco Catalyst and Nexus switching, F5 LTM/BIG DNS/ASM, Juniper and Cisco Firewalls, Cisco IDS, Gigamon, Netscout Arbor, Certificate Lifecycle management, DMVPN, SD-WAN, AWS, Azure and Data Center management.

White Plains, Ny

Sole Network Engineer responsible for all research, design, testing, implementation and administration of reliable, efficient, and cost-effective network solutions, balancing current needs, future growth requirements, technological innovation, and cost constraints.Support and maintain the corporate network in multiple office locations, which includes Cisco L2/L3 switches (Cisco Catalyst 4500 and 6500 series and Cisco Nexus 7000 series), Cisco ASA firewalls, F5 LTM/GTM/ASM, IAS Radius, two-factor authentication and Cisco IDS.Support and maintain corporate WAN technologies which include Cisco routers and MPLS circuits in 10 different offices located throughout the United States and Europe, EIGRP, Cisco IPSEC/L2L/AnyConnect VPN and Riverbed WAN acceleration.Extensive knowledge of TCP/IP; addressing, subnetting, routing, NAT, and analysis using Wireshark.Responsible for maintaining PCI Compliance through the use of quarterly internal vulnerability security scans based on PCI standards and responsible for making certain other teams are building systems based on best practice standards and proactively patching systems.Manage RSA Envision (SIEM) platform for system log and event collection and analysis of network security and compliance data to identify high-priority security incidents.Designed, planned and implemented the network portion of Data Center move to collocation facility in second half of 2011. Currently designing, planning and building new network infrastructure in a new hosting facility which includes the configuration of 2 Cisco Catalyst 6506 core switches, 6 Cisco ASA firewalls, 2 Riverbed Steelheads, RSA Envision device, and 3 F5 LTM’s.Utilize Solarwinds Orion NCM for change management.Maintain several syslog servers running on Debian based Linux distributions.Manage multiple external BIND DNS (servers) running on Solaris 10.Utilize VMWare, versions 3.x to 4.x, for server consolidation and testing.

Responsible for research, design, testing, implementation and management of Windows builds.Responsible for Project Management of all Windows system related projects. Supported and maintained Windows systems, software and hardware for four office locations.Administered and maintained all Exchange 2003 corporate mail systems in four office locations, including hosting email for International subsidiaries in 5 different countries.Managed Windows NT 4.0 Domains and Windows 2003 Active Directory in four office locations.Responsible for creating policies to combat viruses and spam utilizing McAfee ePO Anti-virus server, McAfee Groupshield and Spamkiller.Designed Windows 2003 Active Directory and Exchange 2003 infrastructure for four office locations and lead corporate-wide migration from Windows NT 4.0 domain/Novell and Exchange 5.5.Managed and maintained Blackberry Enterprise server and Blackberry devices.Managed and configured automated Windows backup jobs using Veritas Backup Exec.Managed Windows security updates utilizing Microsoft patch management tool, WSUS.Utilized VMware server virtualization for developing and testing Windows server builds, application implementation, and backup/restore testing.Managed and maintained WINS/DNS/DCHP network applications.Responsible for all servers O/S and application license inventory to ensure compliancy.Provided 24/7 support for all system related issues which may occur in 4 office locations.Responsible for documentation, including Visio diagrams for all systems/environments.

Supervised PC Administrators' daily activities.Responsible for all user and group account creation and modification on the domains.Responsible for all Exchange mailbox creation.Trained Help Desk technicians in desktop support technology.Trained end users on in house software and 3rd party software.Level III support for all PC hardware and software installation/troubleshooting for 250 users.Assisted with network connectivity, remote access, internet access, and server troubleshooting.Responsible for configuration and maintenance of all PC's, laptops and handheld devices.Assisted with maintenance, updates, backups and troubleshooting of remote NT 4.0 servers.Responsible for account creation and management in NT 4.0 domains and Novell.Responsible for troubleshooting PC/laptop related problems for offsite users using Webex.Supported peripheral equipment such as scanners, faxes, copiers, digital cameras, and printers.Setup and configured network printers and maintained corporate print server.Responsible for hardware and software qualification.

Mailroom and Contract services