10/08/2026 updated
100 % available
Senior Network Security Engineer | Palo Alto | Cisco | FortiGate | BGP | VPN | NAC
SAN GILJAN, Malta
Only remote
Lower Secondary School CertificateAbout me
Senior Network & Security Engineer with extensive experience in enterprise networks, firewalls, routing, switching, VPNs and cybersecurity. Specialized in Palo Alto, Cisco, FortiGate, BGP and NAC. Available for remote consulting, troubleshooting, network design and security projects.
Wireless LANCisco Certified Network Associate Security (CCNA Security)Cisco RoutersNetworking HardwareInternet Protocol Security (IP SEC)IPv4IPv6Virtual Private Networks (VPN)Network SecurityNetwork Configuration and Change ManagementNetwork ArchitectureNetwork ControlNetwork Planning and DesignNetwork ForensicsNetwork Installation Services
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Senior Network & Cybersecurity Engineer with extensive experience designing, implementing, troubleshooting and securing enterprise network infrastructures and multi-site environments. Specialized in network security, firewalls, routing, switching, VPNs, SD-WAN, Wi-Fi and network monitoring.
Core expertise: Palo Alto Networks, Panorama, GlobalProtect, Cisco, Cisco Catalyst, Aruba, Meraki, FortiGate, Ruckus, MikroTik, ZTE OLT, Proxmox, PNETLab, EVE-NG and GNS3.
Network engineering: TCP/IP, IPv4/IPv6, VLAN, STP/RSTP, LACP, DHCP, DNS, NAT, QoS, routing and switching, OSPF, BGP, WAN, LAN, WLAN, site-to-site VPN, IPsec, GRE and WireGuard. Experienced in troubleshooting complex connectivity, routing, performance and packet-level issues using Wireshark and network diagnostic tools.
Cybersecurity & Network Security: enterprise firewall design and administration, security policies, application-based firewall rules, NAT, URL filtering, threat prevention, IPS/IDS, authentication, LDAP/Active Directory integration, GlobalProtect VPN, IPsec VPNs, segmentation, network access control and secure remote access.
Enterprise networking: design and deployment of multi-office network infrastructures, data centre connectivity, Internet edge architecture, BGP peering, redundant network design, high availability, network segmentation and secure infrastructure migrations.
Network Access Control: experience designing and developing NAC solutions including RADIUS, 802.1X, dynamic VLAN assignment, guest access, device profiling, quarantine networks and network policy enforcement. Experienced with PostgreSQL, Linux/Debian and REST API integrations.
Monitoring & observability: Grafana, Prometheus, NetFlow and network performance monitoring. Able to analyse traffic flows, identify bandwidth consumers, investigate latency and packet loss, and troubleshoot complex production incidents.
Automation & integration: Python, REST APIs, Linux, Bash, PostgreSQL and infrastructure automation. Experience integrating network platforms, firewalls, wireless controllers and external services through APIs.
Virtualization & labs: Proxmox, PNETLab, EVE-NG and GNS3 for network design, testing, troubleshooting and proof-of-concept environments.
Professional focus: enterprise networking, cybersecurity, network architecture, firewall engineering, network troubleshooting, infrastructure security, VPN solutions, routing & switching, network automation and technical consulting.
I am particularly experienced in complex troubleshooting and production network environments, with a practical, hands-on approach focused on reliability, security and business continuity.
Experience
Professional experience5 - 10 years
Freelancer since2017
Languages
EnglishFluentItalianNative speaker
Project history
Migration of 30 enterprise firewalls from Check Point R80.30 to Palo Alto Networks, including Panorama, GlobalProtect and complete security policy and VPN rule migration. Firewall architecture, security policy design, NAT, VPN configuration and troubleshooting.
Designed, deployed and managed network infrastructure for international sites across Peru, Budapest, Gibraltar, Estonia, Kenya, Colombia, Colorado (USA), Lithuania, Croatia and Sweden. Responsibilities included network deployment, infrastructure management and troubleshooting
Completed Wi-Fi surveys and deployed Meraki access points for NATO/AAFES environments in Germany and South Korea, including wireless infrastructure deployment and network connectivity support.
Certificates
Cisco CCNP
Cisco2024
Cisco Ethical Hacker
Cisco2024
ITIL® Foundation
PeopleCert2024
Certified Network Security Administrator
Palo Alto Networks2022
CCNA
Cisco2015