Senior OT Security Engineer — ICS Threat Hunting & SIEM

Edison Smart®; Doha; On-site; QAR 150,000 - 230,000; Full time

Job summary

Edison Smart® is seeking an OT security specialist to administer deployment and tuning of OT security tools such as Nozomi and Forescout. You will monitor OT/ICS environments with SIEM, detect threats, and support containment actions in live OT networks across Purdue-aligned zones.

You will perform threat hunting, incident response, and maintain asset visibility while ensuring IEC 62443 and NIST ICS compliance in a high-stakes industrial setting.

Qualifications

• Bachelor’s degree in Cybersecurity, Information Security, Computer science or related field.
• Certification any one Mandatory: GIAC Global Industrial Cyber Security Professional (GICSP), ISA/IEC 62443 Cybersecurity Certificate, GIAC Response and Industrial Defense (GRID), ISA Certified Automation Cybersecurity Specialist (IACS).

Responsibilities

• Administer, manage, and support deployment and tuning of OT security tools (Nozomi, Forescout).
• Monitor OT/ICS environments using SIEM and OT security monitoring platforms
• Detect, analyze, and respond to cyber threats targeting industrial control systems
• Support micro segmentation strategies for OT network zones (Purdue Model alignment)
• Collaborate with engineering teams to safely implement containment actions in live OT environments
• Conduct threat hunting across industrial environments using network and log data
• Handle and support incident response for OT cyber events with minimal operational disruption
• Maintain OT asset visibility and network behavior baselines
• Ensure compliance with IEC 62443, NIST ICS, and organizational security standards
• Work with firewall, IDS/IPS, NAC, and segmentation technologies in OT networks

Skills

OT security

SIEM monitoring

Threat hunting

Incident response

Zero Trust for OT

Deep packet inspection

Industrial firewalling

Vulnerability management

Asset visibility

MITRE ATT&CK for ICS

Education

Bachelor’s degree in Cybersecurity or related field

Tools

Nozomi

Forescout

SIEM platforms

IDS/IPS

NAC

Packet brokers

TAP/SPAN technologies

Job description

Edison Smart® is seeking an OT security specialist to administer deployment and tuning of OT security tools such as Nozomi and Forescout. You will monitor OT/ICS environments with SIEM, detect threats, and support containment actions in live OT networks across Purdue-aligned zones.

You will perform threat hunting, incident response, and maintain asset visibility while ensuring IEC 62443 and NIST ICS compliance in a high-stakes industrial setting.