OT Infrastructure Solution Architect - Secure, Compliant

MURAconnect; Brisbane; On-site; AUD 140,000 - 200,000; Full time

Job summary

MURAconnect in Brisbane is seeking a hands-on Infrastructure Solution Architect to support a major energy and telecommunications client through an OT management transformation. You will translate architectural direction into detailed, implementation-ready designs and deliver HLDs/LLDs with supporting documentation to move from architecture into delivery.

This role emphasizes security, compliance with SOCI Act and AESCSF SP2, and practical design across Fortinet, AD/ IAM, and network

Qualifications

• Proven experience in infrastructure, network or security engineering with architecture responsibility.
• Experience designing OT/SCADA networks within critical infrastructure environments.
• Working knowledge of SOCI Act, AESCSF, Essential Eight or IEC 62443.
• Ability to produce high-quality HLDs, LLDs and implementation-ready documentation.
• Hands-on design experience with Fortinet technologies (FortiManager, FortiAnalyzer, FortiAuthenticator).
• Strong identity and access management expertise (Active Directory, MFA).
• Ability to evaluate options, document trade-offs and provide evidence-based recommendations.

Responsibilities

• Support Architecture Plan and Roadmap development, including current-state discovery and target-state design.
• Develop HLDs, LLDs and solution artefacts for Phase 1 delivery work packages.
• Design secure infrastructure capabilities across server/storage, backup/recovery, identity and IAM, endpoint protection, patching, DNS/DHCP, file transfer and network management.
• Develop Fortinet security designs covering FortiManager, FortiAnalyzer and FortiAuthenticator.
• Design Microsoft identity and access capabilities (Active Directory, MFA, tiered administration).
• Define network segmentation, trust boundaries and access controls between OT, corporate IT and DMZ.
• Align designs with AESCSF SP2 and SOCI obligations, ensuring compliance evidence is built into design.
• Evaluate platform options for NMS, PAM, SIEM and certificate management.
• Prepare clear, costed recommendations and document technical decisions and dependencies.
• Define integration requirements for shared corporate platforms and identity/security services.

Skills

Infrastructure design

Solution architecture

Network security

OT/SCADA network design

Fortinet technologies

Identity and access management

Security compliance

Technical documentation

Tools

FortiManager

FortiAnalyzer

FortiAuthenticator

Active Directory

Job description

MURAconnect in Brisbane is seeking a hands-on Infrastructure Solution Architect to support a major energy and telecommunications client through an OT management transformation. You will translate architectural direction into detailed, implementation-ready designs and deliver HLDs/LLDs with supporting documentation to move from architecture into delivery.

This role emphasizes security, compliance with SOCI Act and AESCSF SP2, and practical design across Fortinet, AD/ IAM, and network