Field Service Engineer – Cybersecurity, Cheonan

About the role

ABB's Energy Industries division, within its Automation Business, is hiring a Field Service Engineer for cybersecurity in Cheonan, South Korea. The role focuses on cybersecurity solutions for Distributed Control System (DCS) environments and reports to the Engineering Manager - Power & Water. It is an onsite position where you deliver medium to high complexity service work according to work instructions and ABB guidelines, while helping customers identify opportunities to improve system performance.

Key responsibilities

• Plan and execute service work according to customer orders and expectations, and communicate timelines and expectations to retain customers.
• Identify new service business opportunities with customers and other ABB teams.
• Coach technicians and engineers and supervise complex site activities.
• Design and specify integrated DCS cybersecurity solutions, including security architecture, frameworks and technology selection aligned with IEC 62443 and NIST.
• Implement and integrate systems such as WSUS, NAC, NAS, SIEM, firewall/UTM, including hardening, secure configuration and HMI upgrades.
• Manage patching strategies and secure access in OT environments, supporting vulnerability management and threat detection.
• Support end-to-end deployment, testing and commissioning of security solutions, and prepare technical documentation and design artifacts.

Required profile

• Minimum 2 years of experience in DCS/PLC security engineering, cybersecurity or related industrial automation security roles.
• Proven experience in system integration, threat assessment, security architecture design, vendor management and DCS/PLC security hardening.
• Fluency in Korean and business-level English (verbal and written).
• Willingness to travel frequently to domestic sites (over 60%).

Required skills

• Solid knowledge of DCS security platforms and hands-on experience with WSUS, NAC, NAS, SIEM, firewall/UTM and network security.
• Background in IEC 62443 and NIST Cybersecurity Framework, preferably with network and security design across power plants and KDHC.
• Network security, access control, encryption, vulnerability management and incident response.