Senior Network Security Engineer - OT

Partner with InfoSec and Network Architecture to define and evolve enterprise firewall, NAC, and segmentation architecture across corporate and manufacturing environments.

Lead design, implementation, and lifecycle management of Palo Alto firewall policies, zone-based segmentation, and security services, including secure north-south and east-west controls.

Design and enforce segmentation strategies aligned to Purdue Model principles in manufacturing networks, balancing cybersecurity, availability, safety, and regulatory requirements.

Apply security controls with awareness of industrial protocols such as Modbus/TCP, EtherNet/IP (CIP), PROFINET, OPC/OPC-UA, DNP3, and BACnet, accounting for legacy systems and deterministic traffic flows.

Own medium- to high-complexity firewall and NAC initiatives from design through operational handover, including structured documentation and runbooks....