OT Security Engineer (IT & OT Vulnerability Assessment)

InfiCare Staffing · San diego, United States

Job Title:- OT Security Engineer (IT & OT Vulnerability Assessment)

Location:- San Diego, CA (Local candidate only)

Duration:- Contract

Job Description :

Key Responsibilities:

• 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

• IEC 62443 Cybersecurity Fundamentals
• GICSP
• CISSP

Ideal Candidate

A hands-on OT Security professional capable of independently performing IT & OT Vulnerability Assessments , conducting onsite plant assessments, preparing detailed reports, presenting findings to clients, and recommending practical remediation measures.