Global OT Security Architect – Identity & Networks

Responsibilities include but are not limited to:

• Network Architecture & Segmentation
• Define and own secure OT network architecture aligned to IEC 62443 zone and conduit models utilising firewalls and data diodes.
• Establish defense-in-depth architecture across OT, IT/OT DMZ, safety systems and remote access zones.
• Define secure connectivity for OT–IT, OT–Cloud and vendor integrations.
• Review and approve OT network changes for cyber-physical risk impact.
• Integrate identity-aware networking and Zero Trust principles where operationally feasible.
• Oversee firewall rule lifecycle management, including review, validation, documentation and periodic recertification.
• Ensure firewall configurations support deterministic traffic, legacy protocols and high availability requirements in OT environments.
• Remote Access (Internal & Third Party)
• Architect and govern sec...