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Manager / Assistant Manager - OT Cyber Security
EY · Johannesburg, South Africa · Remote · Lead
Salary Salary not disclosed
About the role
Manager / Assistant Manager – OT Cyber Security
Overview
EY South Africa is looking to strengthen its Operational Technology (OT) Cyber Security capability with experienced OT cybersecurity professionals at Assistant Manager and Manager level.
We are specifically seeking candidates with hands-on OT, ICS and critical infrastructure experience who are comfortable working in operational environments such as mining, utilities, power generation, manufacturing and oil & gas.
This role will require regular travel and, in some cases, extended periods at client sites across South Africa and the broader Africa region.
What We Are Looking For
Assistant Manager
5–8 years relevant experience.
Manager
8–12 years relevant experience.
Candidates must have practical experience in one or more of the following sectors:
Mining
Utilities
Power Generation
Oil & Gas
Manufacturing
Critical Infrastructure
Required Technical Experience
OT Cyber Security Assessments
ICS Security
SCADA Security
OT Risk Assessments
Vulnerability Assessments
Security Architecture Reviews
Network Segmentation
Asset Discovery
OT Governance and Compliance
Incident Response within OT environments
Preferred Framework Experience
IEC 62443
NIST CSF
NIST 800-82
C2M2
ISA Standards
ISO 27001
Preferred Technologies
Nozomi
Claroty
Microsoft Defender for IoT
Tenable.ot
Splunk
Microsoft Sentinel
Preferred Certifications
One or more of the following:
ISA/IEC 62443 Specialist Certifications
GICSP
CISSP
CISM
CCNA
Security+
Nozomi Certifications
Claroty Certifications
Additional Requirements
Must be willing to travel extensively.
Must be comfortable spending extended periods at remote client locations.
Strong report writing and client engagement skills.
Ability to conduct workshops, interviews and site assessments.
Key Success Factors
Deep OT and ICS knowledge.
Ability to work effectively in operational environments.
Strong understanding of IEC 62443 and OT security principles.
Practical experience rather than purely governance-focused experience.
Skills
Cybersecurity
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