Assistant Manager - OT Cyber Security - Technology Consulting - Doha

Ernst & Young Advisory Services Sdn Bhd; Doha; On-site; QAR 437,000 - 655,000; Full time

Benefits offered by this job

Continuous learning

Success as defined by you

Transformative leadership

Diverse and inclusive culture

Job summary

EY Doha seeks an Assistant Manager - OT Cyber Security in Technology Consulting to drive security across major projects from design to handover. This role emphasizes secure-by-design practices, OT risk management, and implementation of security controls on OT systems, PLC/DC networks, and industrial protocols.

You will work with IT and OT teams to ensure policy compliance, conduct vulnerability assessments, and deliver training to staff on security posture and maintenance.

Qualifications

• A Oil & Gas experience or experience in a similar industry.
• A minimum of six years of experience in Cyber Security, including at least three years focused on operational technology.
• Excellent communication, documentation, and stakeholder management skills.
• Proven experience managing the security lifecycle within large-scale industrial projects.
• A deep understanding of industrial protocols, DCS/PLC systems, and the Purdue Model.
• An understanding of OT IDS and asset monitoring technologies.
• Strong knowledge of OT security standards and frameworks.
• Preferred certifications: GICSP, ISA/IEC 62443.

Responsibilities

• Project-specific security management.
• Ensure compliance with client organizational policies, Qatar National ICSSS, and ISA/IEC 62443 requirements.
• Apply the 'secure by design' principle.
• Conduct comprehensive OT-specific risk management for all new systems.
• Oversee the secure configuration, deployment, and commissioning of all OT systems.
• Create configuration baselines for all new systems.
• Follow up on related work to ensure security requirements are met by third-party contractors.
• Define and participate in security-focused Factory Acceptance Tests and Site Acceptance Tests.

Skills

Communication

Documentation

Stakeholder management

OT Cyber Security

Industrial protocols

Education

Bachelor's degree in Cyber Security, Information Technology, Engineering, or related field

Tools

OT IDS

Asset monitoring

Job description

Assistant Manager - OT Cyber Security - Technology Consulting - Doha

Other locations: Primary Location Only

Date: 14 Sept 2026

Requisition ID: 1743812

The opportunity

The OT Cyber Security Specialist’s primary focus will be on integrating cybersecurity throughout the lifecycle of major projects, from initial design requirements through to operational handover.

Your key responsibilities

Project-specific security management

Ensure compliance with client organizational policies, Qatar National ICSSS, and ISA/IEC 62443 requirements.

Ensure the "secure by design" principle is applied.

Conduct comprehensive OT-specific risk management for all new systems.

Oversee the secure configuration, deployment, and commissioning of all OT systems.

Create configuration baselines for all new systems.

Follow up on related work to ensure security requirements are met by third-party contractors.

Define and participate in security-focused Factory Acceptance Tests and Site Acceptance Tests to validate the security posture before deployment.

OT security architecture and standards

Design secure network architectures based on the Purdue Model.

Oversee vulnerability assessments of new systems.

Operational support and incident response

Participate in the development and testing of OT-specific incident response plans.

Ensure a smooth handover by conducting training and awareness sessions for both OT and IT staff on the security posture and maintenance of the new systems.

Qualifications and experience

Oil and Gas experience, or experience in a similar industry.

A bachelor's degree in Cyber Security, Information Technology, Engineering, or a related field.

A minimum of six years of experience in Cyber Security, including at least three years focused on operational technology.

Excellent communication, documentation, and stakeholder management skills.

Proven experience managing the security lifecycle within large-scale industrial projects.

A deep understanding of industrial protocols, DCS/PLC systems, and the Purdue Model.

An understanding of OT IDS and asset monitoring technologies.

Strong knowledge of OT security standards and frameworks.

Preferred certifications

Global Industrial Cyber Security Professional (GICSP).

ISA/IEC 62443 certifications.

What we offer

We offer a competitive compensation package where you’ll be rewarded based on performance and recognized for the value you bring to our business. Plus, we offer:

• Continuous learning: You'll develop the mindset and skills to navigate whatever comes next.
• Success as defined by you: We'll provide the tools and flexibility so you can make a meaningful impact, your way.
• Transformative leadership: We'll give you the insights, coaching, and confidence to be the leader the world needs.
• Diverse and inclusive culture: You'll be embraced for who you are and empowered to use your voice to help others find theirs.

The exceptional EY experience. It's yours to build.

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