Domain Architect - Infrastructure, Networks & OT

About the role

A well-known name in the critical infrastructure sector is looking for a Domain Architect in Sydney, on a full-time permanent basis. The role takes ownership of architecture across enterprise networking, infrastructure and connectivity, with a focus on Infrastructure, Network and Operational Technology (OT). It suits someone who can work strategically while getting into the detail of complex designs.

Key responsibilities

• Develop current-state and target-state architectures, reference architectures, technology standards and roadmaps.
• Lead architecture across enterprise networks, infrastructure, Azure connectivity and IT/OT integration.
• Review Solution Architecture Documents (SADs), technical designs and architecture decision records.
• Ensure solutions meet performance, capacity, latency, security and 24x7 availability requirements.
• Challenge vendors and engineering teams to deliver practical, secure and cost-effective solutions.
• Work with SCADA, protection systems and operational teams so that technology changes do not compromise critical OT environments.
• Provide technical leadership and architecture assurance across major technology initiatives.

Required profile

• Experienced Domain Architect, Infrastructure Architect or senior Solution Architect with strong enterprise networking expertise.
• Experience in the critical infrastructure sector and with OT, including a sound understanding of SCADA.
• Ability to challenge complex designs, influence engineering teams and vendors, facilitate workshops and communicate with senior stakeholders.

Required skills

• Enterprise networking: TCP/IP, BGP, OSPF, MPLS, SD-WAN, VLAN/VRF, routing, QoS and network segmentation.
• Security: Palo Alto firewalls, VPN/IPsec, DMZ architecture, Zero Trust, network access controls and IT/OT security boundaries.
• Azure and hybrid cloud: Virtual Networks, Virtual WAN, ExpressRoute, Azure Firewall, Private Link.
• Architecture and governance: target-state architectures, reference designs, architecture standards, technical roadmaps and design assurance assessments.

What we offer

• A salary package of circa $250k.
• Full-time, permanent position.
• Complex, high-impact technology modernisation initiatives.
• Ownership of architecture standards, design principles and technology roadmaps.