OT Cyber Security Specialist (Ahmedabad)

Key Responsibilities - Design and maintain secure OT network architectures for PLC, DCS, SCADA, HMI, historian, and safety systems. - Implement OT network infrastructure including switches, VLANs, routing, and secure gateways. - Administer OT firewalls including rule configuration, change management, and troubleshooting. - Manage OT asset inventories including discovery, classification, ownership mapping, and lifecycle management. - Perform OT network traffic analysis using Wireshark and packet capture techniques. - Configure and validate port mirroring (SPAN/TAP) for security monitoring and troubleshooting. - Support OT cybersecurity incident detection, response, and recovery with IT security and plant teams. - Ensure secure remote access for vendors and OEMs using approved mechanisms. - Support cybersecurity requirements during recent projects, upgrades, and plant shutdown activities. - Develop and maintain OT cybersecurity documentation including network diagrams, firewall matrices, SOPs, and risk registers. Suitable candidates may forward their updated profiles in strict confidence to .