Senior OT Security Architect for Hyperscale Data Centers

Mission Critical Recruiting; Sydney; On-site; AUD 180,000 - 240,000; Full time

Job summary

Mission Critical Recruiting presents a Senior Manager, Operational Technology Solution Architect role based in Australia. This security architecture position focuses on how OT is connected, segmented and secured across a data centre estate, ensuring platforms meet GRC policies from access control to vendor remote access.

You'll guide outsourced specialists and partners; no direct reports but strong credibility matters.

Qualifications

• Senior IT or security architect with OT, industrial control or critical infrastructure experience.
• Proven ability to define OT security standards across zones, conduits, segmentation and secure remote access.
• Experience assessing vendor platforms against GRC policies and defining reference architectures for OT-to-IT links.

Responsibilities

• Own OT security architecture and standards aligned to IEC 62443 and ISO 27001.
• Assess vendor platforms and define connectivity requirements with third parties.
• Define OT reference architectures for BMS, EPMS, DCIM and SCADA connections to enterprise IT.
• Provide architecture assurance on new builds, expansions and upgrades.
• Plan lifecycle, obsolescence and resilience across OT platforms.
• Brief senior leaders on OT risk and investment priorities.

Skills

OT security architecture

Network segmentation

Firewalls & remote access

Identity & PAM

IEC 62443

ISO 27001

Vendor/integrator management

BMS/EPMS/SCADA exposure

GICSP/CISSP/TOGAF (useful)

Job description

Mission Critical Recruiting presents a Senior Manager, Operational Technology Solution Architect role based in Australia. This security architecture position focuses on how OT is connected, segmented and secured across a data centre estate, ensuring platforms meet GRC policies from access control to vendor remote access.

You'll guide outsourced specialists and partners; no direct reports but strong credibility matters.