Senior Systems Administrator – Onsite Cloud & Security Lead

Certus Recruitment Australia; Melbourne; On-site; AUD 120,000 - 150,000; Full time

Job summary

Certus Recruitment Australia is seeking a Senior Systems Administrator in Melbourne to lead the administration of Windows and Linux environments across on-premises and cloud platforms. You will partner with security, networking, and data engineering teams to ensure reliability and performance.

You will manage Azure services, Entra ID, and governance constructs, support Hyper-V/VMware, and drive automation and incident response across dual data centres.

Qualifications

• Significant senior-level experience managing production Windows Server and Linux at scale.
• Hands-on experience with Microsoft Azure, Entra ID, and governance constructs.
• Strong background in private cloud virtualization (Hyper-V/VMware) with multi-site deployments.

Responsibilities

• Administer and maintain Windows Server and Linux environments across on-premises and cloud platforms.
• Manage Microsoft Azure services including Entra ID, RBAC, Key Vault, networking, and governance.
• Support Hyper‑V and VMware, SAN storage, and DR across dual data centres.

Education

Bachelor's degree in IT/Computer Science

Tools

Azure CLI

Bicep

PowerShell

Bash

SQL Server tools

Oracle DB tools

Hyper-V

VMware vSphere

Azure Entra ID

Job description

Certus Recruitment Australia is seeking a Senior Systems Administrator in Melbourne to lead the administration of Windows and Linux environments across on-premises and cloud platforms. You will partner with security, networking, and data engineering teams to ensure reliability and performance.

You will manage Azure services, Entra ID, and governance constructs, support Hyper-V/VMware, and drive automation and incident response across dual data centres.