Operational Technology Network Security Engineer III
Core
Designing, implementing, and maintaining security controls for operational technology (OT), industrial control systems (ICS), and network environments to protect critical distribution, automation, and facilities.
Role type
Senior IC Operational Technology Network Security Engineer
Builds
Secure OT network architectures, segmentation policies, and incident response capabilities for industrial and operational environments.
Domain
Industrial cybersecurity / Operational Technology (OT) / Manufacturing & Logistics
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
OT network security, network architecture (routing, switching, firewalling), OT network segmentation (Purdue Model, zones, conduits), industrial protocols (Modbus, BACnet, OPC, Ethernet/IP, PROFINET, SCADA, PLCs), threat modeling, vulnerability management, incident response, identity and access management, cloud-connected OT security, security governance and compliance.
Preferred skills
GICSP, GRID, ISA/IEC 62443, CISM, CISSP, CompTIA Security+, Cisco CCNA/CCNP/CCIE.
Technologies
SIEM, EDR, SOAR, Firewalls (Palo Alto, Fortinet, Cisco, Check Point), IDS/IPS, NAC, remote access platforms, vulnerability management tools, Armis, Nozomi Networks, Claroty, Dragos, Microsoft Defender for IoT.
Responsibilities
Design and implement security controls for OT networks and industrial systems; assess OT/ICS architectures for risks and segmentation gaps; partner with engineering and operations to implement secure network designs; conduct vulnerability and risk assessments for OT assets; coordinate remediation planning balancing security and operational continuity; monitor OT security alerts and threat intelligence; support incident response for OT networks; review technical designs for security compliance; mentor junior engineers.
Seniority
Senior, hands-on IC with mentorship responsibilities
