OT/ICS Cybersecurity Architect & Resilience Lead

Wah Loon Engineering Pte Ltd; Singapore; On-site; SGD 120,000 - 170,000; Full time

Job summary

Wah Loon Engineering Pte Ltd is seeking an OT/ICS Cybersecurity Specialist/Manager to lead cybersecurity engineering, governance, risk management and incident response for airport-scale OT/ICS environments at Changi Airport.

You will work with internal teams, consultants, system integrators and OEMs to mitigate cyber risks and ensure project and regulatory compliance across design, testing, commissioning and operations.

Qualifications

• Degree/Diploma in Cybersecurity, IT, Engineering or related field.
• Minimum 5 years of OT/ICS or industrial cybersecurity experience.
• Strong knowledge of IEC 62443, network security and risk management.
• Familiarity with industrial control systems (SCADA, BMS, EPMS, HVAC).
• Certifications (CISSP, CISM, GICSP, ISA/IEC 62443) preferred.

Responsibilities

• Lead OT/ICS cybersecurity engineering and assurance for airport systems such as SCADA, BMS and HVAC.
• Review OT cybersecurity architectures, network segmentation and secure interfaces.
• Evaluate vendor designs for compliance with cybersecurity standards and regs.
• Apply IEC 62443 to risk assessments, system hardening, access control and lifecycle security.
• Develop OT cybersecurity documentation: risk registers, asset inventories and firewall needs.
• Assess risks across OT infrastructure including PLCs, RTUs, IEDs, HMIs and SCADA.
• Define secure configuration, vulnerability management, patching, monitoring and DR requirements.
• Support secure remote access, incident response, resilience planning and recovery.
• Lead design reviews, workshops, testing and remediation with partners and integrators.
• Provide cybersecurity expertise across design, procurement, handover and operations.

Skills

OT/ICS cybersecurity

Stakeholder management

Analytical skills

Network security

Risk management

Vulnerability management

Education

Degree/Diploma in Cybersecurity, IT, Engineering

Job description

Wah Loon Engineering Pte Ltd is seeking an OT/ICS Cybersecurity Specialist/Manager to lead cybersecurity engineering, governance, risk management and incident response for airport-scale OT/ICS environments at Changi Airport.

You will work with internal teams, consultants, system integrators and OEMs to mitigate cyber risks and ensure project and regulatory compliance across design, testing, commissioning and operations.