Job Description

Principal Security Engineer – DevSecOps & Automationn

6-Month Contract | Sydney CBD | Security Engineering | DevSecOps | AWS | Microsoft Security | IaC | Automation | AI Security | Hands-On Technical Leadership

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We’re seeking an experienced Principal Security Engineer to shape security strategy, drive automation and strengthen security practices across a diverse technology environment.

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Working across security engineering, DevSecOps and cloud security, you’ll lead security improvements, tackle vulnerability backlogs and embed security into development and infrastructure processes. You’ll play a key role in converting security controls, policies and detection logic into configuration-as-code, while aligning with broader Group security standards.

Key Responsibilitiesn

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- Drive security engineering roadmaps and vulnerability remediation.
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- Implement DevSecOps practices, Infrastructure as Code (IaC) and security automation.
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- Configure and automate Microsoft security controls, including Entra Conditional Access and Microsoft Sentinel.
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- Provide technical leadership, mentorship and escalation support to security engineers.
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About Younn




- Proven Principal-level Security Engineering experience with solid technical leadership capabilities.
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- Extensive DevSecOps, IaC and security automation experience.
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- Hands-on expertise across Microsoft security technologies (Sentinel, Entra, Defender, etc) and AWS.
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- Experience implementing security controls and detection logic as code.
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- Strong vulnerability management and remediation skills.
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Why Join?n

This is an opportunity to join a high-impact, hands-on security team where you will have genuine ownership and influence. Rather than operating within a narrowly defined enterprise security function, you will work across a diverse portfolio and technologies, tackling a broad range of security engineering challenges.

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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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📌 Principal Security Engineer - DevSecOps (Sydney)
🏢 Paxus Australia
📍 Sydney