IT Security Officer (Operational Technology) - A26207

About the role

Activate Interactive Pte Ltd ("Activate") is a leading technology consultancy headquartered in Singapore with a presence in Malaysia and Indonesia. Our clients are empowered with quality, cost-effective, and impactful end-to-end application development, like mobile and web applications, and cloud technology that remove technology roadblocks and increase their business efficiency. We believe in positively impacting the lives of people around us and the environment we live in through the use of technology. Hence, we are committed to providing a conducive environment for all employees to realize their full potential, who in turn have the opportunity to continuously drive innovation. We are searching for our next team members to join our growing team. If you love the idea of being part of a growing company with exciting prospects in mobile and web technologies that create positive impact on people's lives, then we would love to hear from you. This is a 12 months fixed term contract role. What will you do? The IT Security Officer is responsible for protecting the integrity, availability, and confidentiality of key operational technology infrastructure within the Meteorological Service Singapore. This role bridges cybersecurity expertise with an understanding of specialized environmental monitoring technologies, ensuring that weather observation, forecasting, and dissemination systems remain secure, resilient, and compliant with national standards. This project is with Meteorological Systems Department, Meteorological Service Singapore. OT Asset Discovery & Architecture Mapping Use passive, non-disruptive monitoring tools to discover OT assets across meteorological networks without impacting live operations. Maintain a comprehensive OT Asset Register covering all hardware, firmware, software, and network connectivity. Flag all shadow or unmanaged devices. Review and document the IT/OT network architecture, producing topology diagrams that capture OT-to-IT connectivity, remote access paths, vendor interfaces, and boundary crossing points, each risk-rated. Map operational data flows between OT and IT systems to identify lateral attack paths, including where meteorological process data crosses into less-secure corporate network segments. Maintain the OT Asset Register and IT/OT Network Architecture Map as the foundational security baseline for all vulnerability assessments, risk management, and incident response activities Security Operations & Monitoring Monitor and defend operational technology (OT) supporting meteorological systems, including weather radar networks (e.g., Doppler Weather Radar S/C Bands), satellite ground stations, upper-air sounding systems, and automated weather observation systems (AWOS). Operate and maintain security information and event management (SIEM) tools to detect anomalies across hybrid IT/OT environments. Work closely with the Agency's CISO to manage and deploy critical patches and others security incidents. Investigate and respond to security incidents, coordinating with national CERT teams and agency leadership as required. Risk Management & Compliance Conduct regular risk assessments across meteorological data acquisition, processing, and dissemination pipelines. Ensure compliance with relevant frameworks such as NIST SP 800-82r3, FISMA, ICS/SCADA security standards (IEC 62443), and agency-specific cybersecurity policies. Maintain and test the division's continuity of operations plans (COOP) and disaster recovery procedures to ensure minimal disruption to critical weather services. Vulnerability Management Perform and coordinate regular vulnerability scans, penetration tests, and security audits of systems. Manage patch cycles in close coordination with systems engineers, balancing security needs against the 24/7/365 operational uptime requirements of weather services. Vendor & Supply Chain Security Evaluate third-party hardware and software used in meteorological systems (sensors, data feeds, vendor-supplied processing software) for supply chain risks. Review and enforce security requirements in contracts with technology vendors and data partners Training & Security Awareness Develop and deliver cybersecurity awareness training tailored to the division's operational context, including threats specific to environmental monitoring infrastructure. Serve as the primary OT security expert for the division. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or a related field. Minimum 5 years of experience in IT/OT security roles, preferably within critical infrastructure, government, or scientific/technical environments. Proficiency with SIEM platforms, intrusion detection/prevention systems (IDS/IPS), and endpoint detection tools. Active or ability to obtain a government security clearance at the required level. Preferred Qualifications Familiarity with meteorological systems, remote sensing technologies, or environmental monitoring

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