Principal Security Architect

AGL Energy; City of Melbourne; On-site; AUD 150,000 - 230,000; Full time

Benefits offered by this job

Flexible working

Staff discounts

Parental Leave

Recharge Leave

Wellbeing programs

AGL shares

Job summary

AGL Energy seeks a Principal Security Architect (IT) to lead secure architectures across its enterprise IT landscape in Melbourne. You will shape cybersecurity strategy, define high‑level security standards, and uplift security across cloud, network, and applications.

Collaborating with senior stakeholders, you’ll drive threat modelling, risk assessments, and secure‑by‑design practices, ensuring compliance with ISO 27001, NIST, and Essential 8. Location: Docklands.

Qualifications

• 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 APIs, microservices and containers.
• Broad understanding of enterprise IT systems, infrastructure, cloud platforms and applications.
• Hands‑on experience in threat modelling, security assessments and secure SDLC practices.
• Hybrid networks, segmentation, zero trust, identity‑centric security, and modern authentication protocols.
• Ability to assess cybersecurity risks and communicate with senior stakeholders.

Responsibilities

• Shape cybersecurity strategy through thought leadership on technologies, threats and patterns.
• Define high‑level security architectures across cloud, network, and data platforms.
• Develop reusable security patterns and reference architectures for secure‑by‑design outcomes.
• Partner with teams to embed secure‑by‑design practices across the IT lifecycle.
• Lead threat modelling, security assessments, and design reviews for complex programs.
• Advise senior stakeholders on security risks and incident response.
• Drive improvements via post‑incident reviews and standards alignment.

Skills

IAM

Network security

Cloud security

Endpoint security

Application security

Multi-cloud

APIs & microservices

Zero trust

Identity-centric security

Threat modelling

Tools

Azure

AWS

Job description

Join the change. Electrify your future! We've been proudly Aussie since 1837, always finding new ways to innovate in energy and essential services. Now, we're moving towards a sustainable future through electrification and investing in renewable energy—and we’d like you to join us. Whether you're on‑site, in the office, or somewhere in between, you'll find opportunities to grow your career here. You'll work with a team that’s passionate about powering Australian lives, in a culture that values inclusivity, respect, and learning. Help us create a cleaner energy future, and we’ll back you every step of the way as you build your career. Join the change. Electrify your future.

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.

Benefits

• 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.

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.

We are 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

At AGL, we believe energy makes life better. That’s why we’re passionate about powering the way Australians live, move and work. Like you, we believe that the world is going through extraordinary challenges. We don’t shy away from the tough questions and we consider the answers carefully. We work in partnership with our customers and communities, and take action to shape a better future for all. As life changes, we join the change, constantly evolving over more than 188 years. Today we bring all that know‑how to transform how Australians produce, share and consume energy. We’re investing in new ideas, partnerships and infrastructure – renewing and expanding our portfolio of sources and products to help make them more sustainable, reliable, affordable and useful. We’ll continue to innovate in energy and other essential services to enhance the way Australians live, and to help preserve the world around us for future generations.