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