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L3 OT SME (m/f/d)
Contract
Abu Dhabi, United Arab Emirates
27.02.2026
We are seeking a highly experienced Level 3 OT SME to serve as the ultimate technical authority for Operational Technology environments, including ICS, SCADA, DCS, PLCs, RTUs, and converged IT/OT networks.
Key Responsibilities
- Act as the final escalation point for unresolved L1/L2 incidents, conducting advanced diagnostics, forensic analysis, and root-cause investigations on OT systems, protocols, and anomalies.
- Lead complex troubleshooting and resolution of critical OT issues, including rare failures, intermittent problems, protocol-level defects, or multi-system interactions that impact safety or production.
- Design and architect OT network topologies, segmentation (per Purdue Model), security controls, and resilience strategies aligned with ISA/IEC 62443, NIST SP 800-82, NERC CIP, and other standards.
- Perform advanced threat hunting, vulnerability research, and risk assessments tailored to OT/ICS environments; develop custom mitigation strategies for zero-days or high-severity threats.
- Collaborate with vendors (e.g., Rockwell, Siemens, Schneider, Honeywell) on deep technical escalations, patches, firmware updates, and custom configurations.
- Lead incident response for major OT events, including post-incident reviews, forensic preservation, and improvement recommendations.
- Develop advanced playbooks, standards, reference architectures, and automation/scripts for OT monitoring, patching, and recovery.
- Mentor L1/L2 teams, provide cross-training, and contribute to knowledge transfer and continuous improvement programs.
- Participate in strategic initiatives such as IT/OT convergence projects, zero-trust implementations, and regulatory audits/compliance efforts.
- Serve as the primary OT technical liaison for audits, executive briefings, and cross-functional projects involving engineering, operations, and cybersecurity.
Required Qualifications
- Bachelor's or Master's degree in Electrical/Industrial Engineering, Computer Science, Cybersecurity, or related field (or equivalent extensive experience).
- 8–12+ years of hands-on experience in OT/ICS environments, industrial automation, SCADA/DCS engineering, or critical infrastructure protection.
- 4+ years in advanced/support/escalation roles (L2 or higher), with proven track record resolving the most complex OT issues.
- Deep expertise in industrial protocols (Modbus TCP/RTU, DNP3, OPC UA/DA, Profinet, EtherNet/IP, IEC 61850, etc.) and their security implications.
- Extensive knowledge of Purdue Enterprise Reference Architecture (PERA), DMZ design, network segmentation, and IT/OT convergence challenges.
- Proficiency with OT-specific tools (e.g., Nozomi, Claroty, Dragos, Tenable OT, industrial IDS/IPS) and general forensics/log analysis tools.
- Strong understanding of OT cybersecurity frameworks (ISA/IEC 62443, NIST CSF 2.0, NIST SP 800-82r3) and regulatory requirements (NERC CIP, CFATS, etc.).
- Experience with PLC/HMI programming, configuration management, change control, and vendor-specific ecosystems (Rockwell Automation, Siemens, Schneider, etc.).
Must-Have Certifications, not all but 1 or 2:
- ISA/IEC 62443 Cybersecurity Expert (or multiple certifications in the 62443 series, including Fundamentals + Specialist levels) – required
- GIAC Global Industrial Cyber Security Professional (GICSP) – required
- GIAC Response and Industrial Defense (GRID) or equivalent advanced OT incident response cert – required
- One or more of the following advanced certifications:
- Certified Information Systems Security Professional (CISSP) with OT/ICS focus or experience
- GIAC Critical Infrastructure Protection (GCIP)
- SANS ICS515: ICS Visibility, Detection, and Response (or equivalent advanced SANS OT cert)