Location: Remote (Australia)
Contract: 6 months initial term + 6 month extension option
Security Clearance: NV1 (mandatory)
Job Overview
Our client is seeking an experienced Security Architect to lead a Protected-level security uplift initiative within a complex, regulated environment. This role will drive a Protected‐by‐design approach, defining the security control baseline, threat model, and accreditation pathway—ensuring solutions protect the security boundary and prevent data egress.
Responsibilities
* Lead Cyber/ISM clinics and maintain a single, authoritative record of security decisions
* Define and govern security architecture patterns for Protected environments
* Ensure alignment with centralised classification and routing approaches to avoid \"multiple filter\" risks
* separation patterns for \"straddling\" systems (e.g., identity, admin boundaries, logging, operational controls)
* Develop clear, pragmatic Protected‐level security guidance aligned with PSPF/ISM
* Collaborate across integration, CISO, platforms, data, and cyber operations teams
* Ensure accreditation pathways and security controls are embedded into design, cost, and delivery plans
Reporting & Milestones
* Scope & architecture (current → target), control baseline, Essential Eight maturity target and gap analysis
* Bill of materials (tools/services), resourcing model, and dependency mapping
* Compliance mapping and accreditation artefacts
* 3-5 year cost model and board‐ready investment case (risk, NPV, strategic alignment)
* 10-12 month implementation plan with assurance activities (Essential Eight assessments, IRAP, penetration testing, ISM evidence)
Qualifications
* Proven hands‐on security architecture experience in Protected‐classified environments
* Demonstrated experience with accreditation, IRAP assessments, and ATO processes
* Strong understanding of cross‐domain boundary controls and data egress prevention
* Deep knowledge of PSPF and ISM controls
* Experience defining security patterns, threat models, and control baselines
* Ability to communicate complex security requirements clearly to delivery and executive stakeholders
* Experience working within regulated government or critical infrastructure environments
When inquiring about this role, please quote the job number #273093.
To be considered for the role click the 'apply' button or for more information about this and other opportunities please contact Irina Alrogi at +61 (0)2 6151 9203 or email and quote the above job reference number.
Paxus values diversity and welcomes applications from Indigenous Australians, people from diverse cultural and linguistic backgrounds and people living with a disability. If you require an adjustment to the recruitment process, including the application form in an alternate format, please contact me on the above contact details.
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