Senior Systems Administrator

Avant; Sydney; Hybrid; AUD 110,000 - 150,000; Full time

Benefits offered by this job

Hybrid work arrangement

Job summary

Avant is seeking a Senior Systems Administrator to join the Technology team in a hybrid role based in Sydney or Melbourne. You will manage on-premises, cloud and hybrid infrastructure, ensuring resilience, security and regulatory alignment with APRA CPS 230/234.

The role is hands-on, mentoring juniors and driving improvements across Windows, Linux, Entra ID and VMware environments. You will report to the Head of IT Operations and partner with cross-functional teams to deliver operational

Qualifications

• 5+ years in Systems Administration, Infrastructure Engineering or equivalent.
• Experience with Windows Server, Active Directory, Entra ID and Microsoft technologies.
• Experience with Azure cloud services and hybrid environments.
• VMware, networking, backup and disaster recovery knowledge.
• Experience in highly regulated environments such as financial services.

Responsibilities

• Manage and support enterprise infrastructure across Azure, virtualised and on-prem environments.
• Administer Windows Server, Active Directory, Entra ID and Linux platforms.
• Support VMware, storage, backup, disaster recovery and business continuity capabilities.
• Implement security controls aligned to regulatory requirements.
• Drive patching, monitoring, vulnerability management and operational excellence.
• Collaborate with technology teams to deliver infrastructure improvements.
• Contribute to change, release, incident and problem management.
• Assist with audits and regulatory reviews.

Skills

5+ years experience

Windows Server

Active Directory

Entra ID (Azure AD)

Linux platforms

Azure cloud services

VMware

Networking fundamentals

Backup and recovery

APRA CPS 230/234 knowledge

PowerShell scripting

Tools

Azure

VMware

PowerShell

Entra ID

Job description

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 will 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 will 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
• Strong 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.