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 experienced OT Security Engineer to design and implement security for critical OT environments in power and water facilities. You will develop secure OT network architectures, segment IT/OT, and harden ICS assets such as HMIs, PLCs and SCADA systems.

The role requires hands-on risk assessment and regulatory compliance with NIST CSF, ISO 27001:2022 and local CII standards.

Qualifications

• 4–5 years of hands-on OT cybersecurity experience.
• Proven knowledge of OT networks, risk assessments and regulatory requirements.
• Familiarity with NIST CSF, ISO 27001:2022 and industrial cybersecurity standards.

Responsibilities

• Develop and implement cybersecurity measures across OT environments in power/ water facilities.
• Design and maintain OT network architecture with IT/OT segmentation.
• Harden ICS assets including HMIs, PLCs, RTUs, DCS, SCADA and workstations.
• Ensure secure IT/OT integration and apply patching/controls.
• Support audits and regulatory reviews to maintain strong security posture.

Skills

OT security

Risk assessment

Regulatory compliance

Network security

Tools

Claroty

SIEM

Job description

Posted On 12/08/2026

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 ICs 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, No