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Senior Systems Administrator - Wintel/RHEL/Defender

Company

Talenza

Location

Australia, New South Wales

Posted

June 19, 2026

Position Overview

Sydney | Contract Opportunity

I'm working with a client undertaking a significant infrastructure security uplift program and they're looking for an experienced Senior Systems Administrator to support a range of Windows and Linux server initiatives.

This role will suit someone who is equally comfortable working across both operating systems and has experience delivering security-focused infrastructure projects within enterprise environments.

  • Building and configuring Windows and Linux servers following established standards and procedures
  • Supporting Essential Eight maturity and broader cyber security uplift initiatives
  • Deploying and managing Microsoft Defender across server environments, including Linux
  • Rolling out application control and server hardening solutions across Windows and Linux platforms
  • Working closely with infrastructure, security and project teams to improve server security posture
  • Assisting with operation...

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