Principal Security Architect

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About the role
The Principal Security Architect (IT) is accountable for designing, developing, and governing secure architectures across AGL’s enterprise Information Technology landscape. This role ensures that corporate networks, cloud services, applications, and digital platforms are built and maintained in alignment with AGL’s cybersecurity standards, regulatory obligations, and industry best‑practice frameworks.
Working closely with senior technology, business, and security stakeholders, the Principal Security Architect provides thought leadership and deep technical expertise to uplift AGL’s IT security posture and safeguard critical business systems.
What you’ll be doing
• Shape AGL’s cybersecurity strategy through thought leadership on emerging technologies, threats, and architectural patterns.
• Define high‑level security architectures and design standards across cloud, network, application, identity, and data platforms.
• Develop and maintain reusable security patterns and reference architectures to drive consistent secure‑by‑design outcomes.
• Partner with architects, engineers, and delivery teams to embed secure‑by‑design practices throughout the IT lifecycle.
• Lead threat modelling, security assessments, and design reviews for complex IT programs, providing clear mitigation guidance.
• Advise senior stakeholders on security risks and support major cyber incidents with impact, containment, and recovery expertise.
• Drive continuous improvement through post‑incident reviews, alignment to standards (ISO 27001, NIST, Essential 8), and capability uplift across teams.
What you’ll bring
• Exposure in security architecture within medium/large enterprise IT environments.
• Deep expertise across IAM, network, cloud, endpoint, and application security technologies.
• Strong architectural capability in Azure, AWS, or multi‑cloud, with knowledge of modern application patterns (APIs, microservices, containers).
• Broad understanding of enterprise IT systems, infrastructure, cloud platforms, and applications.
• Hands‑on experience in threat modelling, security assessments, and secure SDLC practices.
• Strong capability in hybrid networks, segmentation, zero trust, identity‑centric security, and modern authentication protocols.
• Proven ability to assess cybersecurity risks, recommend mitigation strategies, and communicate effectively with senior stakeholders.
We’d love to see your applications by Monday 5th October 2026.
At AGL, we offer a wide range of benefits including:
Flexible working: AGL offers a range of flexible working options including hybrid working and/or flexible hours.
Staff discounts: Discounted energy, telco and solar plans: Available for employees, family and friends.
Parental Leave: 20 weeks paid leave for the primary carer plus employer-paid superannuation on unpaid leave.
Additional Leave: 1 week ‘Recharge Leave’ for eligible employees and salary sacrifice up to 6 weeks additional leave.
Wellbeing Programs: Partnerships with Medibank and Fitness Passport and on-site health appointments (massage, skin checks etc.).
AGL Shares: Up to $1000 as part of annual Share Reward plan and salary sacrifice up to $5000 of shares.
*Benefits may change over time and vary based on role type and location.
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Inclusion at AGL
At AGL, we value diversity and welcome applicants from various backgrounds, including Aboriginal and/or Torres Strait Islander peoples, individuals with disabilities, culturally diverse individuals, and members of the LGBTQ+ community. AGL is dedicated to maintaining a diverse workforce and encourages applicants to share their lived experiences.
We offer reasonable adjustments throughout the recruitment process and respect the privacy of those who choose not to disclose. To learn more visit: www.agl.com.au/careers
AGL is proud to be a WORK180 Endorsed Employer for All Women.
At AGL, we use some AI-enabled tools to support recruitment administration. All hiring decisions are made by hiring leaders and Talent Solutions professionals, with human oversight throughout.
Our pre-employment screening process includes a Nationally Coordinated Criminal History Check and a medical assessment if necessary.
The information provided as part of your application to AGL will be managed in accordance with the AGL Privacy Policy.
AGL does not accept agency submissions unless approval has been granted by a member of the Talent Solutions team. Candidates submitted by an agency without approval will not be considered by AGL.
Location
Docklands VIC 3008
Job Family Group
Information Technology/Digital