OT Security Engineer

OT Security Engineer (IT & OT Vulnerability Assessment)

Location : San Diego, CA

Contract Position

Job Description :

Perform onsite OT Vulnerability Assessments across industrial environments.

Conduct vulnerability scanning and risk assessments for both OT and IT assets.

Utilize OT security tools such as Nozomi, Claroty, Tenable.ot, Microsoft Defender for IoT, etc.

Perform IT vulnerability assessments using Nessus Professional, Qualys, Rapid7, etc.

Review industrial networks, PLCs, SCADA, HMIs, engineering workstations, servers, and network devices.

Prepare assessment reports, risk ratings, remediation recommendations, and executive summaries.

Present findings and recommendations to client stakeholders and management teams.

Coordinate with plant operations, automation, and IT teams during assessments.

Required Skills & Experience

8+ years of experience in OT/ICS Cybersecurity and Industrial Automation.

Hands-on experience with PLC, SCADA, HMI Programming and Commissioning.

Strong understanding of ICS/OT architectures, Purdue Model, IEC 62443, and NIST 800-82.

Experience performing OT Vulnerability Assessments in manufacturing, utilities, energy, mining, or critical infrastructure environments.

Hands-on experience with:

Nozomi Networks

Claroty

Tenable.ot

Experience conducting IT Vulnerability Assessments using:

Nessus Professional

Qualys

Rapid7

Knowledge of industrial protocols such as Modbus, DNP3, OPC-UA, Ethernet/IP, and Profinet.

Strong report writing, presentation, and client-facing communication skills.

Preferred Certifications