IT Security Officer

Location: Singapore

Employment Type: 1 Year Contract (Highly Renewable)

Role Overview

We are hiring for an IT Security Officer to protect mission-critical IT and Operational Technology (OT) environments on behalf of our client. The role covers cybersecurity operations, OT security, incident response, vulnerability management, risk, compliance, and third-party security. You will work closely with IT, engineering, operations, infrastructure, and security teams to strengthen cybersecurity controls across critical operational environments.

Key Responsibilities

• Manage and maintain OT asset inventories, network architecture, data-flow diagrams, and security baselines.
• Monitor IT/OT environments using SIEM, IDS/IPS, endpoint security, and other security technologies.
• Investigate and respond to cybersecurity incidents and support remediation activities.
• Conduct cybersecurity risk assessments, security reviews, vulnerability assessments, and audits.
• Coordinate vulnerability remediation, patching, penetration testing, and security improvement programmes.
• Support cybersecurity compliance against relevant frameworks and standards such as NIST, IEC 62443, FISMA, and ISO 27001.
• Support business continuity and disaster recovery planning and testing.
• Conduct security assessments of vendors, suppliers, and third-party technology providers.
• Support cloud security initiatives across AWS and/or Azure environments.
• Develop cybersecurity awareness and training programmes.
• Act as a cybersecurity subject matter expert and communicate security risks to technical and non-technical stakeholders. Requirements

• Bachelor's Degree in Cybersecurity, IT, Computer Science, Computer Engineering, or related discipline.
• 5+ years of IT Security / Cybersecurity / OT Security experience.
• Experience in critical infrastructure, government, scientific, industrial, or highly regulated environments.
• Hands-on experience with SIEM, IDS/IPS, endpoint security, security monitoring, and incident response.
• Strong understanding of cybersecurity operations, threat management, vulnerability management, and risk assessment.
• Experience with OT/ICS/SCADA environments is highly preferred.
• Knowledge of NIST, IEC 62443, FISMA, or similar frameworks.
• Strong stakeholder management and communication skills.
• Ability to obtain and maintain the required security clearance.

Preferred Certifications

• CISSP
• CISM
• GICSP
• CEH
• GIAC or other relevant cybersecurity certifications