Detection and Response Engineer

Onset Group

📍 Australia, Victoria, Australia

Full time Computer Occupations Posted February 19, 2026

Job Description

Job Description

We are building a new Information Security program, and you will be the first Detection and Response Engineer. This is a hands-on role where you will design and implement detection capabilities from the ground up, focusing on proactive threat identification, automated response, and intelligence driven security operations.

Key Responsibilities:

  • Conduct a focused threat modelling exercise to identify key risks and gaps, including additional log sources required for the SIEM rollout and AI system monitoring.
  • Develop and maintain detections using a Detection-as-Code approach, iterating based on threat modelling outcomes and emerging threat intelligence.
  • Design, implement, and optimise automated triage and investigation playbooks to accelerate response times.
  • Integrate threat intelligence feeds into the SIEM and a dedicated AI agent for enriched detection and context.
  • Cond...