Senior OT Security Engineer: Nozomi Deployments (UAE)

Edison Smart®; Dubai; On-site; AED 180,000 - 240,000; Full time

Job summary

Edison Smart is seeking a Senior OT Security Engineer to strengthen the security of live industrial environments in the UAE. The role focuses on deploying Nozomi Networks Guardian sensors and optimizing network segmentation across multiple sites.

You will work hands-on in plant settings, plan sensor placement, tune alerts and produce clear documentation while coordinating with IT and operations to ensure safe operational changes.

Qualifications

• 7+ years in OT/IC security with hands‑on delivery in live industrial environments.
• Proven Nozomi Networks deployment experience (Guardian and CMC).
• Strong knowledge of industrial networks, segmentation, firewalls, DMZ design.
• Experience with IEC 62443 and Purdue model.
• Familiarity with industrial protocols Modbus, DNP3, OPC, IEC 61850.
• Experience in GCC/UAE regulatory frameworks.
• Certifications such as GICSP, GRID, ISA/IEC 62443 or Nozomi Networks training.
• Based in UAE with immediate start.

Responsibilities

• Deploy and optimise Nozomi Guardian sensors across multiple sites.
• Plan sensor placement, traffic mirroring and data collection for asset visibility.
• Tune alerts, baselines and threat detection to reduce false positives.
• Design Purdue-aligned network architectures including OT firewalls and DMZs.
• Carry out IEC 62443-based risk assessments.
• Collaborate with operations, engineering and IT teams for safe security changes.
• Produce architecture diagrams and handover materials.
• Support incident investigation and response in OT environments.

Skills

OT/IC security

Nozomi Networks

Industrial networking

IEC 62443

Purdue model

Industrial protocols (Modbus, DNP3, OP

OPC/IEC 61850

OT security incident response

Firewall/DMZ design

GCC/UAE regulatory frameworks

Certifications (GICSP, GRID, ISA/IEC 6

Tools

Nozomi Guardian

Central Management Console (CMC)

Job description

Edison Smart is seeking a Senior OT Security Engineer to strengthen the security of live industrial environments in the UAE. The role focuses on deploying Nozomi Networks Guardian sensors and optimizing network segmentation across multiple sites.

You will work hands-on in plant settings, plan sensor placement, tune alerts and produce clear documentation while coordinating with IT and operations to ensure safe operational changes.