OT Cybersecurity Engineer

Flintex Consulting; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

Flintex Consulting Pte Ltd is seeking an OT cybersecurity specialist to join our team in Singapore. The role focuses on supporting implementation of OT cybersecurity across critical infrastructure environments and non-CII sectors, with emphasis on DCS/SCADA/HMI/PLC/RTU hardening and secure remote access.

You will conduct risk assessments, review security by design, and participate in vendor security assessments, while coordinating with plant operations, IT, and OT vendors.

Qualifications

• 4–6 years of relevant OT/ICS experience
• Exposure to OT/ICS in energy, gas, or water sectors
• OT/IT cybersecurity experience
• Knowledge of critical infrastructure / CII regulations
• Experience with cybersecurity risk assessments and audits
• Experience planning or supporting tabletop exercises

Responsibilities

• Support implementation of OT cybersecurity initiatives across CII and non-CII environments.
• Perform security reviews and hardening of DCS, SCADA, HMI, PLC, RTU and engineering workstations.
• Support OT network security including segmentation, firewalls, secure remote access and Purdue Model architecture.
• Conduct/support Threat Risk Assessments, Security by Design reviews and vendor security assessments.
• Monitor and investigate OT cybersecurity alerts using SIEM and OT security monitoring tools.
• Support vulnerability management, incident response and cybersecurity tabletop exercises.
• Work closely with plant O&M, engineering, IT, cybersecurity teams and OT vendors.

Skills

OT/ICS architecture

OT systems experience

Industrial protocols

OT security tools

SIEM platforms

Tools

Claroty

Nozomi

Dragos

Splunk

Google SecOps

Job description

• Support implementation of OT cybersecurity initiatives across CII and non-CII environments.
• Perform security reviews and hardening of DCS, SCADA, HMI, PLC, RTU and engineering workstations.
• Support OT network security including segmentation, firewalls, secure remote access and Purdue Model architecture.
• Conduct/support Threat Risk Assessments (TRA), Security by Design (SBD) reviews and vendor security assessments.
• Support compliance with IEC 62443, NIST CSF, ISO 27001, CSA CCoP and PUB WSCP requirements.
• Monitor and investigate OT cybersecurity alerts using SIEM and OT security monitoring tools.
• Support vulnerability management, incident response and cybersecurity tabletop exercises.
• Work closely with plant O&M, engineering, IT, cybersecurity teams and OT vendors.

Technical Requirements

• Good understanding of OT/ICS architecture and industrial control systems.
• Experience with one or more OT systems such as ABB 800xA, Siemens PCS 7, Honeywell PKS, GE Mark VIe or Schneider Electric.
• Working knowledge of industrial protocols such as Modbus, OPC, IEC 61850, IEC-104 or DNP3.
• Exposure to OT security tools such as Claroty, Nozomi or Dragos, and SIEM platforms such as Google SecOps or Splunk.

Experience

• 4–6 years of relevant experience, preferably with exposure to:
• OT/ICS environments, particularly energy, gas and/or water
• OT/IT cybersecurity
• Critical infrastructure / CII regulatory requirements
• Cybersecurity risk assessments and audits
• Planning or supporting cybersecurity tabletop exercises