Location: Sydney, New South Wales, Australia

The Windows Infrastructure Engineer will play a crucial role in managing and supporting critical Windows-based systems and services, including Active Directory, Windows Server, and virtualization platforms. This role is integral to maintaining the stability and security of our global infrastructure, contributing to both day-to-day operations and strategic platform improvements. The successful candidate will have a strong background in Windows administration, Active Directory, and group policy management, with experience in enterprise-scale environments.

Responsibilities

• Manage and support Windows Server (2016-2025+), Active Directory, core infrastructure services, and virtualization platforms (VMware, Nutanix).
• Monitor platform health, capacity, and performance, ensuring high availability and operational stability.
• Resolve incidents and service requests within defined SLAs and OLAs.
• Support AD replication health, group policy management, and authentication issues.
• Assist in privileged group governance, auditing, and security configuration.
• Contribute to hardening and compliance initiatives, including LDAPS, auditing, and baseline policies.
• Execute infrastructure changes, support patch management, and OS upgrades, providing clear impact assessments.
• Develop and maintain scripts (PowerShell, Ansible) to reduce manual effort and improve reliability.
• Maintain technical runbooks, SOPs, and platform documentation, contributing to knowledge sharing across global teams.

Qualifications

• Strong experience in Windows Server administration, Active Directory, Group Policy, DNS, DHCP, and large virtual environments.
• Proven track record in supporting production platforms at scale and delivering change in controlled environments.
• Experience with hybrid identity management (AD + Entra ID/Azure AD) and M365 administration, especially mail routing issues.
• Proficiency in PowerShell scripting and a demonstrated embracement of AI for problem-solving.
• Exposure to infrastructure automation tools like Ansible and Terraform is desirable.
• 3-6 years of experience in infrastructure/systems engineering roles, preferably in enterprise or regulated environments (financial services experience is an asset).
• Strong troubleshooting skills with a focus on root cause analysis.
• Attention to detail, critical for compliance and audit requirements.
• Ability to manage competing priorities and work effectively with technical and non-technical stakeholders.
• Proactive approach to identifying risks, improvements, and contributing to automation and operational efficiency.

We are seeking a Windows Infrastructure Engineer to join our global team, responsible for the operation and support of enterprise Windows and hybrid infrastructure platforms, ensuring high availability, security, and timely project delivery.