Ryan Dodd

Background

About Ryan Dodd

Progressed from Level 3 Infrastructure Technician apprenticeship (Distinction) to leading OT infrastructure, network, and cybersecurity projects in food manufacturing — delivering zero-downtime implementations and enhanced resilience across four UK sites.Key AccomplishmentsDirected full OT decommissioning and greenfield recommissioning, authoring OT plans for network/server migration and implementation.Led server infrastructure overhaul: designed HCI hardware, networking, hypervisor setup; executed migration, testing, and operational handover.Strengthened OT cybersecurity per NIST, IEC 62443, and Purdue Model:Applied patches with zero production downtime.Deployed Claroty SRA + BeyondTrust for secure remote access.Integrated continuous threat detection (Tenable OT + Claroty CTD).Designed and implemented iDMZ for secure IT/OT separation.Developed OT disaster recovery threat & response plans.Managed OT networks across 4 sites: administered Hirschmann, Cisco Industrial Ethernet, and Catalyst switches with high availability.Executed network transformation projects: migrated to modern Cisco hardware with full redundancy; introduced segmentation, zone-based topology, switch stacking, and protocols (VRRP/HSRP/RSTP/RPVSTP).Implemented Microsoft LAPS for automated server password rotation.Upgraded Active Directory across 5 OT environments: enhanced Group Policy, added LDAPS + 2FA on vCenter/ESXi.Commissioned Veeam Backup & Replication with immutable backups and dedicated secure domain; created DR documentation.Proven ability to bridge IT/OT convergence, secure industrial environments, and maintain operational continuity in high-stakes manufacturing settings.