Curriculum Vitae

Nikos
Katsifos

ICT Manager  ·  Infrastructure

ICT professional with over 25 years of experience in IT management and information technology security, expert in driving strategic IT advancements and implementing cybersecurity measures. Led a 5-person IT team achieving a 45% cost reduction and cutting response times by 60%, while migrating 40+ VMs with minimal downtime.

25+
Years in ICT
45%
Cost Reduction
40+
VMs Migrated
60%
Response Time Cut
work_history

Professional Experience

ICT Manager
Oct 2006 — Present
Ellinogermaniki Agogi
Pallíni, Attiki, Greece  ·  On-site  ·  Educational Institute
  • Led a 5-person IT team, elevating productivity and streamlining operations institution-wide.
  • Drove strategic IT advancements resulting in a 45% cost reduction.
  • Designed an integrated technology framework aligned to educational objectives.
  • Developed and implemented a scalable IT infrastructure roadmap.
  • Strengthened data protection with stringent cybersecurity measures.
  • Enhanced IT and telecom systems, cutting response times by 60%.
Information Technology Security Engineer
Jan 2005 — Dec 2005
MOD SA
Athens, Attiki, Greece  ·  On-site  ·  Ministry of Economy
  • Optimized VPNs for secure remote workforce operations.
  • Fortified network defenses, slashing breach risk by 50%.
  • Deployed cutting-edge firewalls & secured client data.
  • Managed 24/7 system monitoring, ensuring zero downtime.
Information Technology Consultant
Sep 2002 — Sep 2005
Ergoman
Athens, Attiki, Greece  ·  Hybrid  ·  Last-Mile Telecommunication Company
  • Successfully designed and implemented network infrastructure for optimal performance.
  • Worked with OTE X25/Frame relay network for ΟΠΑΠ, travelling as needed.
  • Implemented network monitoring tools to ensure continuous network availability and performance.
IT Specialist
Dec 2001 — Jan 2003
OTE SA
Athens, Attiki, Greece  ·  Hybrid  ·  Networking & Telecom
  • Collaborated with cross-functional teams to integrate new printing-network technologies.
  • Provided technical troubleshooting expertise for complex network issues.
  • Delivered network documentation and training materials.
System Network Administrator
Jan 2000 — Nov 2001
Powernet
Athens, Attiki, Greece  ·  On-site  ·  Web Hosting & Development
  • Oversaw 10 servers running Sun Microsystems & Solaris OS.
  • Managed Cisco Switches & PIX firewalls.
  • Performed system log analysis and security audits.
System Administrator
Feb 1995 — Dec 1999
New Europe
Athens, Attiki, Greece  ·  On-site  ·  Newspaper Company
  • Managed an IPX/SPX Network with a Novel Netware Server, servicing over 30 devices.
  • Managed a Major PBS that increased sales up to 7%.
devices

Technical Skills

Virtualisation & Backup
dnsVMware ESXi & vCenter
deployed_codeProxmox VE
backupVEAM Backup & Replication
saveProxmox Backup Server
desktop_cloudProxmox Datacenter Manager
Cloud
cloudMicrosoft Azure
cloudAWS Services
cloud_syncBackblaze
Hardware
settings_ethernetTP-Link Products
settings_ethernetDell Products
settings_ethernetUbiquiti Products
settings_ethernetHPE Products
settings_ethernetYealink Products
settings_ethernetGrantstream Products
settings_ethernetLinksys Products
settings_ethernetColubris Products
settings_ethernetAruba Products
settings_ethernetRAD Products
Networking & VPN
routerBGP / OSPF / RIP
wifiWiFi Optimization
vpn_keyOpenVPN / Wireguard / IPsec / L2TP / PPTP
device_hubRouting Switching & Bridging
Security & Firewall
securityLinux iptables
securityWatchGuard FireboxV
securitySnort IPS
securityBitdefender GravityZone
securityWireshark
securityOpenVAS
Operating Systems & Servers
computerLinux (Redhat-Debian)
windowMicrosoft Server
Storages
storageTrueNAS
storageQNAP
Databases & Applications
databaseMySQL / MariaDB
table_chartMicrosoft SQL Server
monitoringZabbix NMS
schoolMoodle LMS
menu_bookKoha Library
webNGINX / Apache / PHP Optimization
mailProxmox Mail Gateway
call_splitAsterisk PBX
military_tech

Key Achievements

deployed_code
↓ 60% Cost
Migration from VMware ESXi to Proxmox VE
Migrated 40+ VM's with minimal downtime and reduced costs up to 60%.
mail
↓ 30% Downtime
Migration from Local Exchange Server to Azure Exchange
Reduced downtime up to 30% as well as making mailboxes safer.
school
99.9% Uptime
Hosting Moodle for 3,000+ Users
Managed heavy loads with ease, achieving 99.9% uptime annually as well as fine-tuning databases (MariaDB, PHP and Apache Web Server).
savings
No Outsourcing
Maintaining Infrastructure with Low-Cost Upkeep
In applicable scenarios, implemented solutions that were cost-effective and impactful, eliminating the need to outsource
monitoring
↑ Uptime
Simplified System Management
Built system alerts and digestible monitoring graphs, significantly reducing downtime on critical infrastructure.
rocket_launch
NS-11 Flight
Participated in Physics Experiment with Blue Origin
Managed a system module aboard the Blue Origin Space Flight NS-11, representing the institution internationally.
school

Education

workspace_premium
Certification — VoIP
RAD
2002
workspace_premium
Certification — X.25, Frame Relay
RAD
2002
workspace_premium
Diploma — Information Technology
IEK KSINI
1991 — 1993
build
High School Diploma — Mechanical Engineering
3rd Technical Lyceum
1988 — 1989