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IT Infrastructure Lead Engineer

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Service Stream

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Location:
Australia , Melbourne

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Category:
IT - Administration

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Contract Type:
Employment contract

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Salary:

Not provided
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Job Description:

We are seeking a highly accomplished Lead Systems Engineer to serve as a technical authority and strategic technical architect for our hybrid infrastructure. This is a 'strong generalist' role designed for a professional who possesses deep technical mastery across the Microsoft 365 and AWS ecosystems, paired with the commercial acumen to drive long-term IT strategy. The successful candidate will lead the transition from legacy infrastructure to a modern Zero Trust architecture, ensuring our global environment is secure, automated, and cost-optimized. You will act as a bridge between complex technical execution and executive leadership, translating sophisticated infrastructure requirements into clear business outcomes.

Job Responsibility:

  • Act as a primary advisor to the leadership team, possessing the ability to articulate complex technical concepts to non-technical stakeholders with clarity and precision
  • Contribute to the development and execution of a multi-year IT strategy that aligns with organizational growth and security objectives
  • Conduct regular audits of Microsoft 365 licensing (Business vs. Enterprise) and cloud consumption (AWS/Azure) to identify cost-saving opportunities and ensure maximum return on investment
  • Lead by example, fostering a culture of high performance, thorough documentation, and continuous improvement within the engineering team
  • Provide expert-level administration of the Microsoft 365 tenant, with a focus on Intune (Endpoint Manager) for Autopilot and compliance, SharePoint Online architecture, and Exchange Online security
  • Act as the primary architect for Entra ID (Azure AD). Oversee the lifecycle of Enterprise Applications, including SAML/OIDC SSO integrations, App Registrations, and Conditional Access policies to ensure secure, seamless user authentication
  • Architect and manage Zscaler (ZIA & ZPA) environments to provide secure, seamless access to internet and private resources, replacing traditional VPN dependencies
  • Design and optimize our primary AWS footprint, focusing on Application Load Balancers (ALB), VPN Gateways, and Route 53. Maintain and govern Azure workloads and Entra ID (Azure AD) integrations
  • Oversee the integrity of Active Directory, Group Policy (GPOs), DHCP, and DNS. Manage the Microsoft PKI (AD CS) environment to support RADIUS (NPS) and certificate-based authentication (802.1X)
  • Drive operational efficiency through advanced PowerShell scripting and API integrations (Microsoft Graph). Manage and maintain Docker container environments for modern application delivery

Requirements:

  • Exceptional verbal and written communication skills
  • demonstrated ability to 'explain complex topics simply' to diverse audiences
  • A proactive approach to security validation, ensuring all infrastructure aligns with the ACSC Essential Eight and modern cybersecurity frameworks
  • 7+ years in Systems Engineering, with at least 3 years in a Lead or Senior capacity managing enterprise-scale hybrid environments
  • Expert knowledge of Windows Server (2016-2022), Windows Desktop, and high-availability networking protocols (BGP, OSPF, VLANs)
  • Must hold, or be eligible to obtain, an Australian Government Baseline Security Clearance (requires Australian Citizenship)
What we offer:
  • Flexible working – We genuinely consider all flexibility requests
  • Growth – Career development opportunities across our expanding business
  • Discounts – Access to hundreds of major retailers including Woolworths, Airbnb, JB Hi-Fi, and Bupa
  • Paid leave – Parental, cultural, community service, study, corporate volunteering, and purchased leave
  • Culture – A workplace that values diversity, inclusion, and celebrates excellence

Additional Information:

Job Posted:
April 01, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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