Global OT Security Architect – Identity & Networks

**Key Responsibilities:** *Responsibilities include but are not limited to:* **1. 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.**2. Remote Access (Internal & Third Party)*** Architect and govern secure remote access solutions for OT environments, including vendor and contracto...