We are working with a client undergoing a significant infrastructure security uplift program and are looking for an experienced Senior Systems Administrator to support a range of Windows and Linux server initiatives.
This role requires comfort across both operating systems and experience delivering security-focused infrastructure projects within enterprise environments.
Senior Systems Administrator – Sydney | Contract Opportunity
Responsibilities
* Build and configure Windows and Linux servers following established standards and procedures
* Support Essential Eight maturity and broader cyber security uplift initiatives
* Deploy and manage Microsoft Defender across server environments, including Linux
* Roll out application control and server hardening solutions across Windows and Linux platforms
* Work closely with infrastructure, security and project teams to improve server security posture
* Assist with operational support, troubleshooting and platform optimisation
Qualifications
* Strong Systems Administration experience across both Windows and Linux environments
* Experience supporting Essential Eight maturity programs or security uplift projects
* Hands‐on experience deploying and managing Microsoft Defender for Endpoint
* Exposure to application control technologies and endpoint security tooling
* Experience building and configuring servers from documented procedures and standards
* Strong troubleshooting skills and a security‐first mindset
* Excellent communication and stakeholder engagement skills
Nice to have
* Experience in regulated or enterprise‐scale environments
* Exposure to vulnerability remediation programs
* Knowledge of infrastructure security best practices and hardening frameworks
If you are a senior infrastructure professional who enjoys working across both Windows and Linux and wants to contribute to a major security transformation program, we'd love to have a confidential chat.
#J-18808-Ljbffr