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OT Cybersecurity Engineer

2 weeks ago

Singapore SEMBCORP UTILITIES SERVICES PTE. LTD. Full time
About Sembcorp
Sembcorp is a leading energy and urban solutions provider headquartered in Singapore. Led by its purpose to drive energy transition, Sembcorp delivers sustainable energy solutions and urban developments by leveraging its sector expertise and global track record.
Join Gas & Related Services
Drive Asia's energy transition with us Our Gas & Related Services segment is a key growth engine, deliveringreliable and efficient energy to industries and communities across multiple countries. We support Asia's growing energy needs while advancing the shift to a lower-carbon future.
About the Role
We are seeking a dedicated and experienced OT Cybersecurity Engineer to safeguard the operational technology environments within our power generation and water treatment facilities in Singapore. This role involves implementing, maintaining, and monitoring cybersecurity measures to ensure the resilience and integrity of critical infrastructure.
Key Responsibilities
The OT Cybersecurity Engineer will be responsible for developing and implementing cybersecurity measures across operational technology environments within power generation and water treatment facilities.
This includes designing OT network architecture, conducting risk assessments, and ensuring compliance with NIST, ISO27001:2022, and Singapore's CII regulations.
The role involves monitoring OT systems for anomalies using cybersecurity tools (e.g., SIEM, Claroty, Nozomi), leading incident response efforts, and hardening ICS assets such as HMIs, PLCs, RTUs, and engineering workstations.
The engineer will maintain accurate documentation of network topologies and asset inventories, support secure IT/OT integration, and ensure regular patching or application of compensating controls.
Additionally, the role includes collaborating with internal teams and vendors, delivering cybersecurity training to plant personnel, and supporting audits and regulatory reviews to maintain a robust cybersecurity posture across critical infrastructure.
Requirements
  • Bachelor's degree in engineering, cybersecurity, control system, or related field.
  • Minimum 3-5 years of experience in OT cybersecurity, preferably in the energy, utilities.
  • Well-experienced in at least one major industrial control system (e.g., Siemens PCS 7, ABB 800xA, Honeywell PKS, GE Mark IVe etc).
Technical Skills
  • Knowledge of IEC 62443, NIST CSF, ISA/IEC standards, WSCP(PUB) and CCoP(CSA) requirements.
  • Familiarity with industrial protocols (Modbus, OPC DA/UA, IEC 61850, etc.).
  • Experience with ICS cybersecurity tools (e.g., Claroty, Dragos).
  • Proficient in firewalls, network segmentation, and SIEM integration.
Certifications (preferred)
  • CCNA, GICSP, CISSP, CISM or SANS ICS/OT certifications.
Our Culture at Sembcorp
At Sembcorp, our culture is shaped by a strong set of shared behaviours that guide the way we work and uphold our commitment to driving the energy transition.
We foster an institution-first mindset, where the success of Sembcorp takes precedence over individual interests. Collaboration is at the heart of what we do, as we work seamlessly across markets, businesses, and functions to achieve our goals together. Accountability is a core principle, ensuring that we take ownership of our commitments and deliver on them with integrity and excellence. These values define who we are and create a workplace where our people can thrive while making a meaningful impact on driving energy transition.
Join us in making a real impact