Lead Cyber Security Architect - 12 Month Contract | Australia

Security Clearance: Current Active Baseline Clearance

We are seeking an experienced Lead Cyber Security Architect to join a major government organization delivering critical digital services that support millions of Australians. This role will play a key part in designing secure, scalable, and resilient technology solutions across complex hybrid environments.

About the Role

As a Security Architect, you will provide technical leadership and security architecture expertise to ensure solutions, platforms, and services are secure by design. Working within a quick-paced and complex environment, you will translate business requirements into fit-for-purpose security architectures while ensuring compliance with government security frameworks and best practices.

Key Responsibilities

- Design and develop end-to-end secure solution architectures across cloud, hybrid, and on-premises environments.
- Translate business and ICT requirements into conceptual, logical, and physical architecture designs.
- Lead security architecture reviews and provide assurance throughout the solution lifecycle.
- Develop architecture artefacts, standards, and governance documentation.
- Identify security risks, architectural gaps, and recommend pragmatic, risk-based solutions.
- Provide expert advice on security controls, cloud security, identity management, and network security.
- Collaborate with technical and business stakeholders to drive secure delivery outcomes.
- Present architecture recommendations to governance forums and executive stakeholders.
- Contribute to architecture roadmaps, technology strategy, and continuous improvement initiatives.
- Mentor technical teams and support knowledge transfer across the organisation.

Required Experience





- Extensive experience as a Security Architect, Solution Architect, or Enterprise Architect within large and complex environments.
- Strong knowledge of security architecture principles and secure‑by‑design methodologies.
- Experience designing secure solutions across Azure, AWS, and on‑premises platforms .
- Strong understanding of:
- Zero Trust Architecture
- Identity and Access Management (IAM)
- Encryption and Key Management
- Security Monitoring and Logging
- Security Automation and DevSecOps
- ACSC Information Security Manual (ISM)
- Protective Security Policy Framework (PSPF)
- NIST Cybersecurity Framework
- ISO/IEC 27001
- Privacy and regulatory compliance requirements

Key Attributes

- Strong stakeholder engagement and influencing skills.
- Ability to analyse complex business and security challenges.
- Excellent written and verbal communication skills.
- Experience working with governance boards, architecture review forums, and executive stakeholders.
- Ability to provide practical, business‑focused security advice and recommendations.
- Australian Government or highly regulated environment experience.
- Experience supporting critical digital or citizen‑facing services.
- Exposure to architecture governance frameworks and enterprise architecture practices.
- Experience with security operations, SIEM, automation and resilience programs.

About us

Workforce Solutions is a division in the Australia and New Zealand region of NTT Ltd.



and includes the former Viiew as part of its broader expertise and capabilities. The Workforce Solution division specialise in workforce‑as‑a‑solution services, allowing clients the flexibility to augment or strengthen our team with a specialized workforce who offer deep experience and expertise in digital, data, security, infrastructure, project solutions and business transformation. Our highly experienced and skilled teams are supported by extensive training and enablement, ongoing technical assessments and our global network as part of NTT Ltd. All team members of Workforce Solutions are selected for the depth of their knowledge and experience in their particular field, as well as their professionalism and ability to integrate into our client’s workplace environment. To ensure the best match, we encourage clients to be involved in selecting their Workforce Solutions consultants.

NTT Ltd. is a leading global technology services company. Working with organizations around the world, we achieve business outcomes through intelligent technology solutions.For us, intelligent means data driven, connected, digital and secure. As a global ICT provider, we employ more than 40,000 people in a diverse and dynamic workplace that spans 57 countries, trading in 73 countries and delivering services in over 200 countries and regions

NTT is proud to be an equal opportunity employerwith a global culture that embraces diversity. We are committedto providing an environment free of unfair discrimination and harassment.We do not discriminate based on age, race, color, sex, religion, national origin, disability, pregnancy, marital status, sexual orientation, gender reassignment, veteran status, or other protected category.

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📌 Lead Cyber Security Architect (Sydney)
🏢 Ntt
📍 Sydney