Network Architecture and Operations
Experienced in planning, designing, configuring, documenting, monitoring, and troubleshooting network infrastructure across ISP, enterprise, public-sector, data center, and cloud-connected environments.
Senior IT Infrastructure & Network Security Professional
George Tsirigotis
Network Engineer with extensive experience in IT infrastructure, ISP environments, enterprise networks, incident management, LAN/WAN implementation, virtualization, data centers, and secure cloud operations.
Enterprise Networks
Network Administration
Data Centers
ISP Environments
30+
years in network and IT infrastructure roles
Enterprise
networks, data centers, firewalls, VMware, and cloud operations
Continuity
monitoring, troubleshooting, automation, and service reliability
Profile
Infrastructure Built for Reliability
Security and Governance
Practical background in network security, incident management, Fortinet technologies, Cisco Secure Firewall, cybersecurity training, and procedures that protect service availability and data assets.
Technical Support Leadership
Strong track record in coordinating engineering, operations, and policy teams while supporting users, resolving incidents, automating routines, documenting environments, and improving support procedures.
Career
Work Experience
Information Society
Coordinates engineering, operations, and policy teams to optimize network architecture, design, engineering, and security services for both legacy and modern technologies. Responsible for planning, analysis, design, monitoring, troubleshooting, and secure customer implementation in cloud environments.
Altec Telecoms
Managed network infrastructure administration, planning, design, configuration, installation, documentation, monitoring, asset management, daily system health checks, and real-time network support for an ISP environment.
Hellas On-Line
Supported nationwide network troubleshooting and repair, computer and peripheral support, operating system installations, networking, and day-to-day end user service continuity.
NetOne
Maintained infrastructure and network availability, responded to alerts and events, installed, configured, upgraded, and troubleshot LAN/WAN components including routers, hubs, and switches. Supported standards, redundant systems, policies, and procedures for uptime and data protection.
Space Hellas
Technical section work for installation and troubleshooting for corporate customers.
Hellas On-Line
Technical section work for installation and troubleshooting for corporate clients.
Infocad
Technical section work for installation and troubleshooting for corporate clients.
Selected Work
Projects and Accomplishments
Data Center Public Projects
Installed and activated public projects in the firm's data center environment.
NMS Implementation
Installed, configured, maintained, and supervised Network Management Systems, including support for 52 firm nodes.
Robotic Camera Monitoring
Installed 36 robotic cameras at network nodes for visual monitoring and reduced response time to outages.
Engineering Archive Digitization
Supported digitization of 13,000 A0 engineering designs for an oil production unit using a robotic reading system.
WiMAX Topology
Installed and tested an early standards-based WiMAX topology for last-mile wireless broadband access.
Nationwide ISP Nodes
Configured and installed network equipment for 16 company nodes across the country.
Education & Training
Professional Development
Programmer Analyst
Korelko
Vocational High School Degree
Anavryta, Floriculture and Gardening
Cybersecurity Skills Certification - Public Administration
Greek Public Administration Training Program
Project Management Procedures
OTE Academy S.A.
Secure Firewall Test Drive 2.0
Cisco Networking Academy
Fortiweb AI to Detect Web Application Threats
Fortinet
Implementing & Troubleshooting Cisco Data Center Unified Fabric
Cisco Networking Academy
Cisco Nexus Test Drive with Nexus 5000 Labs
Cisco Networking Academy
Fortinet, VMware, Cisco, IBM Tivoli Netcool/OMNIbus
FortiManager, FortiAnalyzer, Fortigate, VMware vSphere Manage, Cisco Data Center Unified Fabric, X.25, Frame Relay, Cisco troubleshooting.
Capabilities
Core Skills
Enterprise Networks
Network Security
Project Management
Incident Management
Hyper-V
VMware vSphere
LAN/WAN
Wireless LAN Design
FTTO Design
Data Centers
Technical Troubleshooting
End User Training
Contact
Let's connect
For professional networking, infrastructure discussions, and technology collaboration, send a short message and I will reply by email.
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