Infrastructure Engineer

Day Rate Contract - Infrastructure Engineer (Security) - Pen Test remediation  - Sydney/Hybrid 
 
Our client is running a security remediation program off the back of a recent penetration test and needs an experienced Infrastructure Engineer to lead the technical fix-up. This isn't BAU support, you'll be closing pen test findings, hardening a hybrid Windows and Azure environment, and proving compliance uplift on a live project.
What you'll be doing:

• Remediating critical and high vulnerabilities from pen test findings across endpoints, on-prem servers, and Azure
• Managing patch and update compliance (Intune, SCCM, Azure Update Manager, WSUS/GPO)
• Implementing and tuning Azure WAF and Application Gateway against OWASP Top 10 threats
• Administering and hardening on-prem Windows Server, Active Directory, DNS/DHCP, and Hyper-V/VMware alongside Azure workloads
• Hardening Entra ID (Conditional Access, MFA, PIM) and reducing privileged access exposure across hybrid identity
• Running vulnerability scanning and EDR triage (Qualys, Defender, Sentinel)
• Aligning remediation work to Essential Eight and ISO 27001 controls
• Managing change through CAB/TAB processes with proper rollback planning

What you'll bring:

• Strong Microsoft stack experience across on-prem Windows Server, AD/GPO, Azure, Entra ID, Intune, Defender, and SCCM
• Confidence working hybrid, not just a pure cloud background
• Practical security tooling exposure: SIEM (Sentinel), EDR, Qualys or equivalent VMDR
• Working knowledge of Essential Eight and ISO 27001 frameworks
• PowerShell scripting for automation and compliance reporting
• Comfortable in a live remediation environment with tight timeline