Senior OT Security Engineer (open for Expat)

**I. Job Responsibilities**

• Support the design, implementation, and monitoring of cybersecurity solutions for industrial production networks (OT systems) at factories.
• Directly deploy, administer, and operate endpoint security solutions, especially Trellix Antivirus and equivalent tools in manufacturing environments.
• Perform System Hardening for servers, workstations, and network devices based on security standards (CIS Benchmarks...) in OT environments.
• Work directly with international vendors/partners to implement solutions, troubleshoot issues, and optimize systems.
• Conduct security configuration reviews for SCADA, DCS, PLC, HMI, and other control systems.
• Coordinate security assessments for OT environments.
• Support security reviews of OT systems including firewall, industrial IDS/IPS, NAC, proxy, and monitoring tools.
• Participate in OT incident response, collect logs, and analyze root causes.
• Develop technical procedures, implementation guides, and checklists for real deployment.

**II. Technical Background & Certifications**

***1. Required Technical Background (Minimum 5 years of experience)***

• Hands-on experience in at least one of the following areas:
• Deployment of endpoint security solutions (highly preferred: Trellix, CrowdStrike, SentinelOne, etc.)
• OS Hardening for Windows/Linux and network devices
• Network security infrastructure: firewall, routing, switching, VLAN, Domain Controller, AD security
• Strong advantage: Experience deploying/operating SIEM systems (Splunk, QRadar, ELK, FortiSIEM, etc.) or working as a SOC Analyst

***2. Preferred Certifications***

• CCNA / Security+
• CompTIA Security+
• ISA / IEC 62443
• NIST SP 800-82
• MITRE ATT&CK for ICS

***3. Experience & Skills Requirements***

*Language*

• Good English communication skills (Listening, Speaking, Reading, Writing)
• Must be able to read technical documents, join meetings, and communicate independently with international vendors

*Personal Qualities*

• Detail-oriented and persistent
• Strong self-learning ability and proactive mindset
• Passion for research and proposing optimized solutions

*Service Mindset*

• Strong ownership in solving technical issues thoroughly
• Able to work under pressure in factory/manufacturing environments
• Customer-support mindset with flexibility while maintaining security compliance

*Other Requirements*

Willing to travel and work away from home when required.