Senior Cyber Defence Engineer

7 days ago

Melbourne, Victoria, Australia Decipher Bureau Full time $120,000 - $180,000 per year

About the Company

We're proud to be partnering with a leading ASX-listed organisation that's shaping the future of cyber security in Australia. Joining their high-performing cyber team means being part of a group that continually pushes technical boundaries, building and deploying industry-leading cyber defence solutions across a complex and dynamic enterprise environment.

About the Role

This is a rare opportunity blending hands-on technical operations with strategic influence. You'll lead incident response, own the SIEM, fine-tune and automate the defence environment, and collaborate closely with the wider cyber team to uplift security capability.

Responsibilities:

  • Designing, developing, and maintaining cyber defence architecture across the corporate environment.
  • Building and optimising detection engineering pipelines, use cases, and alerts to stay ahead of emerging threats.
  • Leading incident response efforts - from investigation through to remediation - and conducting simulation exercises to test and strengthen resilience.
  • Onboarding new data sources, tuning detections, and driving continuous improvement of the organisation's defensive posture.
  • Automating repetitive workflows and response actions using Python, PowerShell, or Azure Logic Apps.
  • Establishing strong, trusted relationships with stakeholders across C-suite, corporate, engineering, and business units, clearly communicating risk and business impact.
  • Staying ahead of the evolving threat landscape and contributing to long-term cyber strategy and uplift programs.

Experience Needed:

  • 4+ years' experience in Security Operations, such as SOC, DFIR, detection engineering, or incident response.
  • Proven experience working in complex enterprise-scale environments.
  • Experience with Microsoft Sentinel and KQL for threat hunting, detection, and investigation.
  • Demonstrated expertise in incident response and leading escalations.
  • Scripting and automation experience (Python, PowerShell, Azure Logic Apps).
  • Excellent stakeholder engagement skills - comfortable working with C-level leaders, corporate teams, and customer-facing functions.

Why You'll Love This Role:

  • Play a key role in shaping the organisation's cyber defence landscape at the corporate level
  • Work with leading tech and access ongoing learning
  • Partner with leadership to define the cyber strategy, including emerging threats and AI's role in defence.
  • Join a collaborative, forward-thinking team investing in security innovation.

If you're passionate about building proactive defences, love solving complex security challenges, and want to help shape the future of cyber resilience in a major Australian enterprise, we'd love to hear from you.

How to apply:
Click apply or submit your CV to Jasmine McCrudden -

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