Antonio Cerasuolo

Led the preliminary network and security assessment phase for a public healthcare authority (AS ST-Valle Olona) across multiple hospital facilities within a compliance program aligned with NIS2 and GDPR. Performed on-site discovery and asset inventory (switches, routers, firewalls, wireless, interconnections, segmentation boundaries). Documented existing network topology and segmentation between clinical, administrative, and biomedical device environments to support downstream risk evaluation and remediation. Coordinated with internal IT operations, biomedical engineering, and external vendors to validate inventory accuracy while ensuring continuity of clinical operations during data collection.

Designed, built, and operated a segmented home network using Fortinet FortiGate, VLANs across Cisco and MikroTik, and integration of IP video surveillance and Wi‑Fi access points, applying enterprise-grade segmentation and firewall/access control practices. Completed Fortinet certifications covering next-generation firewall administration, security policy design, and log analysis/threat detection. Conducted research on network segmentation strategies, Zero Trust architectures, and SD‑WAN security aligned with NIS2 and ISO 27001 frameworks, while participating in cybersecurity and OT/IT convergence communities and events.

Managed voice & video capacity upgrades using Agile governance concepts, and led implementations of network resources for customers. Owned design/build of cloud-based SIP (VoIP) interconnections with cloud service providers and project management of new SIP interconnection builds with third-party operators. Supported the interconnect management team for new carrier implementations, including capacity checks and verification. Worked with partners and regulatory authorities across Benelux, UK, Ireland, and USA, and supported cost-savings initiatives involving network services migrations and numbering resources.