Vulnerability Management Specialist, Critical Infrastructure

Wilson; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Wilson is seeking a Vulnerability Management Specialist to protect critical OT, SCADA, CII, IT and network environments in Singapore. This hands-on role requires balancing cyber risk, operational resilience, and remediation feasibility within a large-scale infrastructure setting.

Responsibilities include leading vulnerability assessments, coordinating patches and maintenance windows, and tracking KPIs while supporting audits and risk reviews in a mission-critical environment.

Qualifications

• Bachelor's degree in Cybersecurity, Computer Science, Engineering or related discipline.
• 8+ years' experience across OT/SCADA/CII, infrastructure, networks, IT or cybersecurity operations.
• Knowledge of ISO 27001, CIS Benchmarks, vulnerability and patch management.
• Strong hands-on troubleshooting across patching, firmware upgrades, and configuration changes.

Responsibilities

• Assess vulnerabilities across OT, SCADA, CII, IT, networks and cloud environments.
• Coordinate patching, firmware upgrades, remediation plans and maintenance windows.
• Conduct vulnerability scans across enterprise and air-gapped environments.
• Track vulnerability exposure, patch compliance, remediation SLAs and KPIs; present findings to senior stakeholders.
• Support security reviews, risk assessments and audits, including Change Requests and Risk Acceptances.
• Provide support for critical patches and deployments during scheduled maintenance windows, including weekends where required.

Skills

OT/SCADA/CII experience

Vulnerability management

Patch management

Risk assessment

Education

Bachelor's degree in Cybersecurity, Computer Science, Engineering or related discipline

Tools

SAP

Java

.NET

Apache

nginx

IIS

WebLogic

Cisco

Power BI

Job description

Our client is one of Singapore's leading critical infrastructure and essential services organisations. As they continue to strengthen their cybersecurity capabilities, they are looking for a Vulnerability Management Specialist to safeguard critical OT, SCADA, CII, IT and network environments.

This is a hands-on role for someone who understands that vulnerability management in critical infrastructure goes beyond scanning - it requires balancing cyber risk, operational resilience and remediation feasibility.

Responsibilities:

• Assess vulnerabilities across OT, SCADA, CII, IT, network and cloud environments, recommending appropriate remediation or compensating controls.
• Coordinate patching, firmware upgrades, remediation plans and maintenance windows with system owners, infrastructure teams and vendors.
• Conduct vulnerability scans across enterprise, OT and air-gapped environments and coordinate penetration testing and asset mapping.
• Track vulnerability exposure, patch compliance, remediation SLAs and other security KPIs/KRIs, presenting findings to senior stakeholders.
• Support security reviews, risk assessments and audits, including Change Requests, Deviations and Risk Acceptances.
• Provide support for critical patches and deployments during scheduled maintenance windows, including weekends where required.

Responsibilities:

• Bachelor's degree in Cybersecurity, Computer Science, Engineering or a related discipline.
• Over 8 years' experience across OT/SCADA/CII, infrastructure, networks, IT or cybersecurity operations.
• Knowledge of ISO 27001, CIS Benchmarks, vulnerability and patch management, network security and risk assessment.
• Strong hands-on troubleshooting capability across patching, firmware upgrades and configuration changes.

Technical experience in one or more of the following:

• SAP: Kernel, PO, Support Packages, SAP Notes
• Applications: Java, .NET, Apache, nginx, IIS, WebLogic
• Networks: Cisco, ACI, Arista, F5, Check Point, Palo Alto, routers, switches and firewalls
• VM Analytics: Vulnerability management, dashboards and reporting using Excel, Power BI and Copilot

If you have a strong infrastructure or cybersecurity foundation and want to apply your expertise within a large-scale, mission-critical environment, we’d be keen to hear from you.

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