Senior OT Security Architect for Data Center & ICS

Mission Critical Recruiting; Sydney; On-site; AUD 210,000 - 270,000; Full time

Job summary

Mission Critical Recruitment Pte Ltd. is helping to recruit a Senior OT Solution Architect for a hyperscale data centre operator in Australia. The role focuses on securing OT environments across BMS, EPMS and SCADA, and setting architecture standards that align with IEC 62443 and ISO 27001.

You’ll work as a senior individual contributor, directing outsourced specialists and technology partners. You will influence security strategy at a large build programme, bridging data centre engineering, OT

Qualifications

• Senior IT or security architect with OT, industrial control or critical infra experience.
• Experience with vendor/partner management and architecture assurance.
• Strong understanding of OT risk, segmentation and secure remote access.

Responsibilities

• Own OT security architecture and standards, including segmentation and secure remote access.
• Assess vendor platforms against GRC policies and define connectivity requirements for third parties.
• Define reference architectures for BMS, EPMS, DCIM and SCADA connections to IT.
• Provide architecture assurance on new builds, expansions and upgrades from design through handover.
• Plan lifecycle, obsolescence, and resilience across OT platforms.
• Brief senior leaders on OT risk, priorities, and trade-offs.

Skills

OT security architecture

network segmentation

firewalls

remote access

PAM

IEC 62443

BMS/EPMS/SCADA

Education

GICSP certification

IEC 62443

CISSP

TOGAF

Job description

Mission Critical Recruitment Pte Ltd. is helping to recruit a Senior OT Solution Architect for a hyperscale data centre operator in Australia. The role focuses on securing OT environments across BMS, EPMS and SCADA, and setting architecture standards that align with IEC 62443 and ISO 27001.

You’ll work as a senior individual contributor, directing outsourced specialists and technology partners. You will influence security strategy at a large build programme, bridging data centre engineering, OT