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Operational Technology Cyber Engineer
Job Location:
Monthly Salary:
Experience Required:
Posted:
27 May 2026 (30+ days ago)
Posted:
Application Deadline:
24 August 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
Key Responsibilities
OT Security Design & Implementation
Develop and implement cybersecurity measures across operational technology environments within power generation and water treatment facilities.
Design and maintain OT network architecture ensuring proper segmentation between IT and OT environments (including Purdue Model Levels 03.5).
Harden ICS assets such as HMIs PLCs RTUs DCS SCADA systems and engineering workstations.
Ensure secure IT/OT integration and apply regular patching or compensating controls to OT assets.
Risk Assessment & Compliance
Conduct risk assessments and ensure compliance with NIST CSF ISO 27001:2022 and Singapores CII regulations (CCoP by CSA WSCP by PUB).
Support alignment with Companys Group Cybersecurity Framework (based on NIST CSF)
Ensure compliance with IEC 62443 / ISA 99 standards for industrial automation and control system security.
Support audits and regulatory reviews (including CSA and PUB assessments) to maintain a robust cybersecurity posture across critical infrastructure.
Monitoring & Incident Response
Monitor OT systems for anomalies using cybersecurity tools (e.g. SIEM Claroty Nozomi).
Lead incident response efforts for OT cyber incidents coordinating with O&M teams IT/OT cybersecurity teams and external incident response partners (e.g. Black Panda EY).
Ensure all alerts are managed in a standardised well-defined and efficient manner in alignment with Companys policy.
Execute first-responder actions and follow-up responses per Companys Cyber Security Incident Response Procedures for CII and non-CII OT sites.
Documentation & Asset Management
Maintain accurate documentation of network topologies asset inventories and OT security configurations.
Ensure all ICS assets are properly catalogued including SCADA HMI PLC substations inverters RTUs data loggers firewalls and anti-virus software across wind solar and power generation sites.
Physical & Network Security
Enforce physical security controls for ICS assets locked racks panels rooms secured cabling and camera surveillance at perimeter access points.
Implement and manage data diodes firewalls network segmentation and access controls per Companys OT security requirements.
Collaboration & Training
Collaborate with internal teams (O&M Maintenance IAC Group Digital / Tech Risk Governance) and external vendors.
Deliver cybersecurity awareness training to plant personnel ensuring frequency of at least once per year with regular awareness messaging.
Provide security advisory for new OT projects including remote operations by third-party vendors.
Requirements
Education
Bachelors degree in Engineering Cybersecurity Control Systems or a related field.
Experience
Minimum 35 years of experience in OT cybersecurity preferably in the energy utilities or critical infrastructure sector.
Well-experienced in at least one major industrial control system (e.g. Siemens PCS 7 ABB 800xA Honeywell PKS GE Mark VIe etc.).
Technical Skills
Area Requirements
Standards & Frameworks IEC 62443 NIST CSF ISA/IEC standards WSCP (PUB) CCoP (CSA) ISO 27001
Industrial Protocols Modbus OPC DA/UA IEC 61850 DNP3
OT Security Tools Claroty Nozomi Dragos or equivalent ICS cybersecurity platforms
Network Security Firewalls network segmentation SIEM integration data diodes
ICS/SCADA Systems DCS SCADA HMI PLC RTU hardening and configuration
Vulnerability Management Patch management compensating controls penetration testing coordination
Certifications (Preferred)
CCNA (Cisco Certified Network Associate)
GICSP (Global Industrial Cyber Security Professional)
CISSP (Certified Information Systems Security Professional)
CISM (Certified Information Security Manager)
SANS ICS/OT certifications (e.g. ICS515 ICS410)
CCNP PCNSE NSE 1/2/3/4 are advantageous
Soft Skills
Strong analytical and problem-solving abilities
Excellent verbal and written communication skills
Ability to work independently and as part of a small agile OT cybersecurity team
Proactive attitude with commitment to continuous learning in the evolving OT threat landscape
Required Skills:
Operational Technology Cyber Engineer
Required Education:
degree / diploma
