OT Engineer: DCS/SIS, Cybersecurity & Automation

ASTER CHEMICALS AND ENERGY PTE. LTD.; Singapore; On-site; SGD 90,000 - 160,000; Full time

Job summary

Aster Chemicals and Energy Pte. Ltd. is seeking an OT Engineer on Jurong Island, Singapore, to support reliability, safety, and continuous improvement of the plant's OT and control systems.

The role focuses on upgrading critical automation systems (DCS, SIS, FGS) and lifecycle management while ensuring compliant, safe, and efficient operations. The ideal candidate has a degree in engineering and 5+ years in IT/OT with hands-on network and cybersecurity experience, plus familiarity with OT

Qualifications

• Bachelor's degree in Computer Engineering, Network Engineering, Automation Engineering, or related field.
• Minimum 5 years IT/OT, industrial control systems, automation, or related engineering experience.
• Minimum 1 year hands-on experience with network infrastructure (switches, firewalls, and configuration).
• Proven experience implementing cybersecurity for process automation systems, industrial control systems, and OT networks.
• Hands-on experience in automation system engineering, project execution, and system implementation.
• Knowledge of OT cybersecurity standards; IEC 62443 certification is an advantage.
• Experience in oil & gas, petrochemical, chemical, or other manufacturing industries is preferred.
• Strong communication and teamwork skills, with ability to manage priorities under tight timelines.

Responsibilities

• Support design, implementation, and enhancement of OT infrastructure, networks, and control system architectures.
• Administer OT system access, user profiles, and cybersecurity controls including AD, endpoint security, and patch management.
• Configure and troubleshoot OT network devices, including firewalls, switches, routers, OPC UA, Matrikon, and Kepware.
• Implement, maintain, and validate backup and recovery solutions for OT environments.
• Participate in cybersecurity risk assessments and ensure effective security controls.
• Provide technical support for OT, instrumentation, and control systems to ensure reliability and efficiency.
• Collaborate with OT Security, maintenance teams, vendors, and engineering stakeholders to resolve OT issues.
• Maintain documentation and manage MOC; drive continuous improvement.

Skills

Network Engineering

Cybersecurity

Industrial Automation

OT Systems

Education

Bachelor's in Computer/Network/Automation Engineering

Tools

OPC UA

Matrikon

Kepware

Firewalls

Job description

Aster Chemicals and Energy Pte. Ltd. is seeking an OT Engineer on Jurong Island, Singapore, to support reliability, safety, and continuous improvement of the plant's OT and control systems.

The role focuses on upgrading critical automation systems (DCS, SIS, FGS) and lifecycle management while ensuring compliant, safe, and efficient operations. The ideal candidate has a degree in engineering and 5+ years in IT/OT with hands-on network and cybersecurity experience, plus familiarity with OT