Operational Technology Cyber Engineer

Flintex Consulting Pte Ltd; Singapore; On-site; SGD 84,000 - 95,000; Full time

Job summary

Flintex Consulting Pte Ltd in Singapore seeks an OT Security Design & Implementation specialist to develop and implement cybersecurity measures across OT environments in power generation and water facilities.

Responsibilities include designing OT network architecture with IT/OT segmentation, hardening ICS assets, and ensuring compliance with NIST CSF, IEC 62443, and local regulations; coordinating audits and incident response with O&M teams.

Qualifications

• 3–5 years OT cybersecurity experience.
• Experience with at least one major ICS (Siemens PCS 7, ABB 800xA, Honeywell PKS, GE Mark VIe).
• Knowledge of NIST CSF, ISO 27001:2022 and IEC 62443 is preferred.

Responsibilities

• Develop and implement cybersecurity measures across OT environments.
• Design and maintain OT network architecture and segmentation (Purdue 0–3.5).
• Harden ICS assets such as HMIs, PLCs, RTUs, DCS, SCADA systems and engineering workstations.
• Lead incident response coordination with OT/IT teams and external partners.
• Support audits and regulatory reviews to maintain robust cybersecurity posture.

Skills

Analytical thinking

Problem solving

Communication skills

Independent / small team work

Education

Bachelor's degree in Engineering / Cybersecurity / Control Systems

Tools

Claroty

Nozomi

Dragos

Industrial ICS/SCADA knowledge

Job description

Posted On 05/08/2026

Job Information

Work Experience 4-5 years

Technology

SGD 7500 - SGD 8500

City Singapore

State/Province Central Singapore

079903

Job Description

Key Responsibilities

? OT Security Design & Implementation

• Develop and implement cybersecurity measures across operational technology environments within power generation and water treatment facilities.
• Design and maintain OT network architecture, ensuring proper segmentation between IT and OT environments (including Purdue Model Levels 0–3.5).
• Harden IC S assets such as HMIs, PLCs, RTUs, DCS, SCADA systems, and engineering workstations.
• Ensure secure IT/OT integration and apply regular patching or compensating controls to OT assets.
• Conduct risk assessments and ensure compliance with NIST CSF, ISO 27001:2022, and Singapore's CII regulations (CCoP by CSA, WSCP by PUB).
• Support alignment with Company's Group Cybersecurity Framework (based on NIST CSF)
• Ensure compliance with IEC 62443 / ISA 99 standards for industrial automation and control system security. [
• Support audits and regulatory reviews (including CSA and PUB assessments) to maintain a robust cybersecurity posture across critical infrastructure.
• Monitor OT systems for anomalies using cybersecurity tools (e.g., SIEM, Claroty, Nozomi).
• Lead incident response efforts for OT cyber incidents, coordinating with O&M teams, IT/OT cybersecurity teams, and external incident response partners (e.g., Black Panda, EY).
• Ensure all alerts are managed in a standardised, well-defined, and efficient manner in alignment with Company’s policy.
• Execute first-responder actions and follow-up responses per Company's Cyber Security Incident Response Procedures for CII and non-CII OT sites.

? Documentation & Asset Management

• Maintain accurate documentation of network topologies, asset inventories, and OT security configurations.
• Ensure all IC S assets are properly catalogued, including SCADA, HMI, PLC, substations, inverters, RTUs, data loggers, firewalls, and anti-virus software across wind, solar, and power generation sites.
• Enforce physical security controls for IC S assets — locked racks, panels, rooms, secured cabling, and camera surveillance at perimeter access points.
• Implement and manage data diodes, firewalls, network segmentation, and access controls per Company’s OT security requirements.
• Collaborate with internal teams (O&M, Maintenance IAC, Group Digital / Tech Risk Governance) and external vendors.
• Deliver cybersecurity awareness training to plant personnel, ensuring frequency of at least once per year with regular awareness messaging.
• Provide security advisory for new OT projects, including remote operations by third-party vendors.

Requirements

? Education

• Bachelor's degree in Engineering, Cybersecurity, Control Systems, or a related field.

? Experience

• Minimum 3–5 years of experience in OT cybersecurity, preferably in the energy, utilities, or critical infrastructure sector.
• Well-experienced in at least one major industrial control system (e.g., Siemens PCS 7, ABB 800xA, Honeywell PKS, GE Mark VIe, etc.).

? Technical Skills

? Area Requirements

• OT Security Tools Claroty, Nozomi, Dragos, or equivalent IC S cybersecurity platforms
• ICS/SCADA Systems DCS, SCADA, HMI, PLC, RTU hardening and configuration
• Vulnerability Management Patch management, compensating controls, penetration testing coordination

? Certifications (Preferred)

• GICSP (Global Industrial Cyber Security Professional)
• CISSP (Certified Information Systems Security Professional)
• CISM (Certified Information Security Manager)
• CCNP, PCNSE, NSE 1/2/3/4 are advantageous

? Soft Skills

• Strong analytical and problem-solving abilities
• Excellent verbal and written communication skills
• Ability to work independently and as part of a small, agile OT cybersecurity team
• Proactive attitude with commitment to continuous learning in the evolving OT threat landscape