Senior Cyber Security Operations Engineer

Location: Sydney

Employment Type: Full time, Permanent

Role Summary

I am seeking a Senior Cyber Security Operations Engineer to drive its defensive cybersecurity operations. In this high-impact position, you will act as the primary subject matter expert across threat detection, incident handling, cloud posture, and defensive automation across a modern, multi-cloud workplace.

Working closely with engineering and operational leads, you will elevate our internal SOC capabilities, refine monitoring infrastructure, and ensure high operational resilience.

Core Responsibilities
Defensive Automation & Infrastructure: Drive the architecture and continuous tuning of enterprise SIEM, EDR, and identity protection tools. Build automated response playbooks to streamline triage and accelerate incident response.
Incident Escalation & Threat Mitigation: Serve as the principal technical contact for critical security alerts, directing host containment, account isolation, and post-incident remediation.
Proactive Threat Detection: Design and implement custom detection logic, hunt hypotheses, and correlation rules to uncover emerging threats.
Security Control Engineering:



Collaborate with infrastructure, development, and cloud teams to integrate Secure-by-Design principles into organizational change pipelines.
Process & Compliance Maturity: Develop standard operating procedures (SOPs) and align operational capabilities with recognized security frameworks.

Requirements
Proven Experience: 5+ years in dedicated cybersecurity roles, including 3+ years operating as a senior engineer or technical lead within an enterprise SecOps or SOC workplace.
Technical Mastery: Deep hands-on experience configuring and maintaining enterprise XDR, SIEM, and cloud identity platforms.
Detection & Scripting: Strong capability writing custom detection rules (KQL or similar query languages) and building SOAR workflows.
Vulnerability & Cloud Operations: Demonstrated background in vulnerability management, risk-based prioritization, and core cloud security principles (Azure/AWS).
Framework Exposure: Working knowledge of standards such as NIST, ISO 27001, MITRE ATT&CK;, or Essential Eight.
Certifications: CISSP, SC-200, or equivalent senior security credentials highly regarded.

📌 Cyber Security Engineer Sydney
🏢 Sirius.
📍 Sydney