Theodoros Skouras
Network Security Architect
Experience
Apr 2024 - Present
1 year 4 months Pyrgetos, Greece
HybridNetwork Security Architect
Freelancer / Consulting Services
- Architect network solutions in hybrid and heterogeneous environments, both in cloud and on premises.
- Workshop and Proof of Concept.
- System and Network hardening.
- Penetration Testing and Vulnerability analysis.
- Packet Analysis, and identification of root causes in heterogeneous and complex networks.
- API securtiy testing.
- ISMS Design and Development, Private Sector. Assisted companies of various sizes and complexity by leading projects with the aim to design and develop robust enterprise information security (ISO 27001 compliant).
- Produce and maintain technical documentation.
- Technologies and Methodologies used: OWASP, MITRE ATT@CK, ITIL v4, COBIT, Cisco IOS XE and NX-OS, Cisco Thousandeyes, Aruba, pfSense, Azure, AWS, Kali Linux, Burpsuite, Maltego, Metasploit, Nessus, Wireshark/tcpdump, Grafana, Zabbix, Proxmox, Debian
Jan 2018 - Apr 2024
6 years 4 months Munich, Germany
HybridPrincipal Network & Security Engineer
Far Galaxy Networks
- Team Leader of IT & Network and responsible for the overall company's security posture
- Architect network solutions in hybrid and heterogeneous environments, both in cloud and on premises.
- Management of IT & Network and responsible for the overall company's security posture.
- Produce and maintain technical documentation and guides leveraging Jira Confluence.
- System Engineering Linux Clusters and Data Center farms.
- Troubleshooting networks and applications performance.
- System hardening following industry's best practices.
- Vulnerabilities Assessments.
- Technologies and Methodologies used: ITILv4, COBIT, SD-WAN Zscaler, Cisco IOS XE and NX-OS, pfSense, Fortinet, Sophos,Aruba Docker/Ansible, Microsoft Azure, AWS Linux, Proxmox, VMWare, F5 Load Balancers, Palo Alto, Shell Scripting Network Automation with Python Paramiko, Wireshark/tcpdump, Nessus
Jan 2016 - Dec 2019
2 years Munich, Germany
GALILEO Ground Network Monitoring Engineer
European Space Agency, DLR
- Monitoring & Control of GALILEO ground segment devices.
- Performing Troubleshooting Activities.
- Performing Contingency Activities.
- Trouble Ticket Management.
- Testing & Integration.
- Review of element/segment operative procedures.
- Contribution to preparation of reports.
- Technologies and Methodologies used: Linux, SNMP, Sophos, Forcepoint, GDATA, openLDAP, Alcatel-Lucent Switches & Routers
Jan 2015 - Dec 2017
3 years Thessaloniki, Greece
Senior Network & Security Engineer
Orange TS
- Analysis of business needs of potential customers.
- Workshop and Proof of Concept.
- Implementation of IT projects according to the business needs.
- Maintenance of the overall company's onprem infrastructure.
- Second & Third level support.
- Technologies and Methodologies used: CISCO Routers/Switches, Barracuda Load Balancers,Virtualization (VMWare vSphere, Hyper-V), Dell Servers & Storage, VoIP technologies (Cisco Call Manager, CUCM, Asterisk , FusionPBX), Linux
Jan 2008 - Dec 2015
8 years Athens, Greece
Network Engineer
Intrasoft International S.A.
- Network design & implementation of the Public Insurance Institution of Greece. This project included Cisco Switches & Routers, Cisco ASA for the perimeter security, Barracuda Load Balancers. More than 100 points of presence, directly connected to the main infrastructure, in the whole country with WAN (BRI and Serial).
- Network design & implementation of Mesh Wireless Network in the Port Authority of Piraeus, with Cisco Aironet, Cisco Wireless Controllers and Cisco Switches & Routers.
- Design and configuration of site to site VPN with private banks with Cisco ASA.
- Network design & implementation of Greek Police network with Fortinet appliances.
- Network design & implementation of Ministry of Development with Cisco Routers/Switches and Cisco ASA and IPS for the perimeter security.
- Network implementation of the information system in Public Transportations of Athens, with HP MSM Wireless Controllers and HP5800 Layer 3 switches.
- Technologies and Methodologies used: Cisco Catalyst Switches 2924, 2950, 3550,3760X Stackwise 3950,Cisco Layer 3 Switches 6500, Cisco Routers, Barracuda Loadbalancer, Barracuda WebFilter, Barracuda Antispam, HP MSM Wireless Controllers, HP Procurve Switches, Fortinet FortiGate, FortiAnalyzer, FortiManager
Jan 2007 - Dec 2009
2 years Athens, Greece
Network Support Engineer
Velti S.A.
- Member of the internal IT department with focus on networks.
- Daily network and systems checks.
- Redesign of the local network infrastructure according to the needs of the company.
- Presales of network equipment.
- Technologies and Methodologies used: Cisco Catalyst Switches 2924, 2950, 3550, Microsoft Servers.
Languages
Greek
Native
English
Advanced
German
Intermediate
Education
University of West Athens
BSc Information Systems Engineer · Athens, Greece
Athens Information Technology
MSc Information Technologies & Telecommunications · Athens, Greece
Certifications & licenses
Certified in Cybersecurity
ISC2
Cisco CCNP
Cisco
Fortinet FCP - Network Security
Fortinet
IPv6 Analyst & Database Associate
RIPE
Linux Foundation Certified System Administrator
Linux Foundation
Microsoft Certified: Azure Network Engineer Associate
Microsoft
Wireshark Certified Network Analyst
Wireshark
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