Senior L3 Systems Engineer

About the role

A global operator of mission-critical digital infrastructure supporting cloud platforms, AI-driven workloads and large-scale enterprise environments is looking for an experienced Senior L3 Systems Engineer. The role sits within a highly skilled Infrastructure Support Services team that maintains and improves the core platforms behind demanding technology environments. It is not a traditional support role and combines operational support, technical leadership, major incident management and continual service improvement. The position is based in Sydney or Melbourne on a 12-month fixed-term contract.

Key responsibilities

• Act as the Level 3 escalation point for critical infrastructure incidents.
• Lead troubleshooting, root cause analysis and service restoration for Priority 1 and Priority 2 incidents.
• Support large-scale VMware and enterprise infrastructure environments.
• Administer and optimise compute, storage, backup and identity platforms.
• Take part in a 24x7 on-call roster supporting mission-critical services.
• Maintain infrastructure security through patching, remediation and hardening.
• Support infrastructure lifecycle management, including upgrades, migrations and technology refresh.
• Drive automation, monitoring and operational improvement initiatives.
• Produce technical documentation, standards and operational runbooks.
• Work with vendors, project teams and operational stakeholders to deliver resilient infrastructure.

Required profile

• 10+ years of systems engineering or infrastructure engineering experience.
• Strong VMware administration and troubleshooting capability.
• Hands-on experience with NetApp storage environments and enterprise-scale server platforms.
• Proven success as an L3 escalation point, incident management and root cause analysis.
• Experience in highly available, business-critical environments and 24x7 on-call rosters.
• Exposure to enterprise monitoring, automation and infrastructure management tools.
• Excellent communication and stakeholder management skills.
• Highly regarded: data centre, managed services or critical infrastructure experience, disaster recovery and business continuity experience, and mentoring L1/L2 teams.
• Australian citizenship (mandatory) or eligibility for an Australian Government security clearance; current NV1 clearance desirable.

Required skills

• VMware vSphere, ESXi, vCenter and virtual machine administration
• NetApp storage, SAN/NAS, backup and recovery, disaster recovery platforms
• Windows Server, Active Directory, DNS/DHCP, Group Policy, PKI and identity management
• Infrastructure monitoring, PowerShell scripting and infrastructure automation

What we offer

• Equal paid parental leave and purchased leave options
• Flexible ways of working and an employee assistance program
• Novated leasing and salary sacrificing options
• Learning space with access to online courses and investment in career growth