Permanent role, hybrid Sydney or Melbourne Shape the future of technology resilience and security for a trusted Australian financial services organisation.

We are looking for an experienced Senior Systems Administrator to join our Technology team and play a critical role in maintaining a secure, resilient and high-performing enterprise environment. Reporting to the Head of IT Operations, you'll be responsible for the administration, support and continuous improvement of infrastructure across on-premises, cloud and hybrid platforms.

This is a hands-on senior technical role where you'll work across cloud services, servers, virtualisation, identity management, security controls and operational resilience while helping ensure compliance with APRA regulatory requirements.

Key accountabilities: Managing and supporting enterprise infrastructure across Azure, virtualised and on-prem environments

Administering Windows Server, Active Directory, Entra ID (Azure AD) and Linux platforms

Supporting VMware, storage, backup, disaster recovery and business continuity capabilities

Implementing security controls aligned to APRA CPS 230, CPS 234 and industry best practice frameworks

Driving patching, monitoring, vulnerability management and operational excellence initiatives

Supporting identity, access management and privileged access controls

Working closely with technology teams to deliver infrastructure improvements and operational resilience

Contributing to change, release, incident and problem management activities

Assisting with audits,



regulatory reviews and technology risk management activities

Mentoring junior team members and helping build capability across the broader operations team Skills and experience required: 5+ years' experience in Systems Administration, Infrastructure Engineering or a similar role

Strong expertise across Windows Server, Active Directory, Entra ID and Microsoft technologies

Experience supporting Azure cloud services and hybrid environments

Solid understanding of VMware, networking fundamentals, backup and recovery solutions

Experience in regulated environments such as financial services, insurance, banking or superannuation

Knowledge of APRA CPS 230 and CPS 234, or experience working within highly regulated compliance frameworks

Robust troubleshooting, stakeholder management and problem-solving skills

PowerShell scripting and automation experience highly regarded About Avant

Avant is Australia’s leading medical defence organisation, proudly supporting medical professionals for over 130 years. With more than 90,000 members, including health practitioners and medical students across every state and territory, we provide trusted, market-leading products and services tailored to their professional, personal, and practice needs. Join an organisation with purpose, one that genuinely exists to support its members and improve healthcare in Australia.

Apply now and help us build a secure, resilient and future-ready technology environment.

📌 Senior Systems Administrator (Melbourne)
🏢 Avant Mutual
📍 Melbourne