Operational Technology (OT) Security Engineer

About the role

The OT Security Engineer will protect Molex manufacturing environments from evolving cyber threats. Working within a global cybersecurity team, you will secure the infrastructure that powers world‑class products.

Key responsibilities

• Identify security gaps in OT infrastructure and implement remediation solutions.
• Install, configure, and maintain security tools for OT systems.
• Monitor OT networks for breaches, intrusions, and anomalies.
• Respond to and investigate security incidents in the OT environment.
• Discover and remediate vulnerabilities across OT assets.
• Partner with manufacturing sites to promote security best practices.
• Document OT security procedures, processes, and guidelines.

Required profile

• Understanding of Industrial Control Systems (ICS) architectures and components such as SCADA, DCS, PLCs, and HMIs.
• Familiarity with common OT protocols (e.g., Modbus, DNP3, OPC).
• Knowledge of basic cybersecurity principles and network security concepts.
• Awareness of OT‑specific threat vectors and experience with incident response planning.
• Understanding of network segmentation, secure design, and log management.

Required skills

• SCADA, DCS, PLC, HMI
• Modbus, DNP3, OPC protocols
• SIEM and anomaly detection tools
• Firewalls, IDS/IPS, VPNs
• Network segmentation and secure architecture
• Log management and analysis
• Dragos OT Security Platform
• Cisco CCNA or CCNP certification
• Knowledge of NIST, ISO 27001, NERC CIP, IEC 62443, NIST SP 800‑82

What we offer

• Opportunity to work on cutting‑edge OT security challenges in a global manufacturing environment.
• Collaboration with a dynamic, worldwide cybersecurity team.
• Access to advanced security platforms and professional development resources.