Operational Technology (OT) Network Security Analyst
Core
Senior/Lead OT Network Security Analyst monitoring and protecting critical industrial systems using Nozomi Networks solutions.
Role type
Senior/Lead OT Network Security Analyst
Builds
OT network security monitoring, threat detection, and incident response capabilities
Domain
Operational Technology (OT) / Industrial Control Systems (ICS) Security
Deliverable
production ML models | product features | dashboards & analysis | client delivery | infrastructure
Required skills
OT/ICS network monitoring, Nozomi Networks (Guardian, Vantage, Arc), SIEM log correlation, OT network traffic analysis, industrial protocols (Modbus, DNP3, EtherNet/IP, PROFINET), network segmentation, IEC 62443, NIST SP 800-82
Preferred skills
GICSP, Nozomi Networks Certified Expert, CSSA, manufacturing/energy sector experience, additional OT platforms (Claroty, Dragos), Python/PowerShell scripting
Technologies
Nozomi Networks Guardian, Nozomi Networks Vantage, Nozomi Networks Arc, SIEM, Python, PowerShell
Responsibilities
Operate Nozomi Guardian sensors for asset visibility and threat detection; Utilize Nozomi Vantage for centralized management and cross-site monitoring; Deploy and manage Nozomi Arc agents; Triage and investigate security alerts correlated with SIEM; Maintain OT asset inventory and network topology maps; Develop custom detection rules and dashboards; Conduct OT network traffic analysis; Support incident response activities; Produce security reports; Collaborate with engineering and plant operations teams; Contribute to security policies and playbooks; Mentor junior analysts
Seniority
Senior/Lead, hands-on IC with mentorship responsibilities
