Job Description

Technical Lead – Cyber Defence Specialist (SOC/SIEM + OT Security) | 12-month Contract | Brisbane (Hybrid)

Talent Street is seeking an experienced Technical Lead – Cyber Defence Specialist to provide deep, hands-on technical expertise across a major cyber uplift program.

This role is focused on strengthening Security Operations and Defence capabilities, including SIEM/SOC uplift, detection engineering, OT vulnerability discovery, and risk-based remediation design. You’ll work across Corporate IT and Operational Technology (OT) environments, aligned to ACSC Essential Eight maturity targets and NIST CSF 2.0.

What you’ll be doing

• Lead technical delivery across SOC uplift, detection engineering, and OT vulnerability management initiatives
• Provide technical leadership across Microsoft Sentinel SIEM (connectors, analytics rules, automation, workflows)
• Build and refine detection use-cases, logging standards, ingestion/normalisation requirements across IT + OT assets
• Drive onboarding strategies for new systems into the SOC (secure integration, log mappings, telemetry quality)
• Threat analysis, threat hunting and modelling (including MITRE ATT&CK for IT + OT)
• Configure/tune Sentinel alerts to reduce false positives and improve detection quality
• Develop incident response playbooks/runbooks, SOAR logic, escalation pathways, and OT-specific response procedures
• Design and implement an OT vulnerability management solution (tooling, asset discovery, risk scoring, remediation planning)
• Integrate vulnerability tooling with SIEM to improve threat correlation and prioritisation
• Produce technical documentation (designs, implementation plans, risk assessments) and provide stakeholder updates
• Support release/change activities (CAB / Management of Change), plus cutover planning and implementation oversight

What we’re looking for

• 10+ years IT domain experience across infrastructure, networks, and enterprise systems
• 5+ years cyber security experience across IT and OT, with understanding of industrial environments
• Strong track record delivering SOC uplift and OT vulnerability management outcomes
• Deep expertise in Microsoft Sentinel SIEM and SOC operating models
• Strong knowledge of ACSC Essential Eight, NIST CSF, and SOCI Act requirements
• Experience leading delivery within structured PM frameworks (PRINCE2 / PMBOK)
• Relevant industry certs (e.g., CISSP, CEH, SC-100 or equivalent)

Contract details

• 12-month contract
• Brisbane (hybrid) – onsite presence required minimum 3 days per week
• Hourly rate $130 - $140 + Superannuation depending on experience

Apply

If this sounds like you, hit Apply Now or reach out to Oli Roffey at oroffey@talentstreet.com.au