OT Security Lead | Nozomi Networks Expert

NMC2; Spartanburg, Northern (SC, KY); Hybrid; USD 110,000 - 150,000; Full time

Job summary

NorthMark Compute & Cloud (NMC²) seeks a Senior/Lead OT Network Security Analyst based in Spartanburg County, SC. You will monitor OT assets with Nozomi Guardian, Vantage, and Arc to detect anomalies and safeguard critical industrial systems.

Responsibilities include deploying sensors, investigating alerts, maintaining asset inventories, and collaborating with plant operations. 5+ years cyber, 3+ OT/ICS, and IEC/NIST familiarity preferred.

Qualifications

• 5+ years cybersecurity; 3+ years OT/ICS network monitoring or analysis.
• Hands-on operational experience with Nozomi Networks: Guardian, Vantage, and Arc.
• Understanding of OT/ICS environments, industrial protocols (Modbus, DNP3, EtherNet/IP, PROFINET).
• Experience with SIEM platforms and log correlation in hybrid IT/OT environments.
• Familiarity with IEC 62443 and NIST SP 800-82.
• Certifications preferred: GICSP, Nozomi Networks Certified Expert, CSSA.

Responsibilities

• Operate and administer Nozomi Networks Guardian sensors across OT segments for asset visibility and threat detection.
• Utilize Nozomi Vantage for centralized management and cross-site OT security monitoring.
• Deploy and manage Nozomi Arc agents for endpoint visibility within OT environments.
• Triage and investigate security alerts, prioritizing OT risk, and correlate with SIEM data.
• Maintain OT asset inventories and network topology maps; develop detection rules and dashboards.

Skills

OT/ICS monitoring

Threat detection

Incident response

Python/PowerShell

SIEM experience

Tools

Nozomi Guardian

Nozomi Vantage

Nozomi Arc

SIEM tools

Job description

NorthMark Compute & Cloud (NMC²) seeks a Senior/Lead OT Network Security Analyst based in Spartanburg County, SC. You will monitor OT assets with Nozomi Guardian, Vantage, and Arc to detect anomalies and safeguard critical industrial systems.

Responsibilities include deploying sensors, investigating alerts, maintaining asset inventories, and collaborating with plant operations. 5+ years cyber, 3+ OT/ICS, and IEC/NIST familiarity preferred.