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System Administrator

4 days ago 2026/05/31
Other Business Support Services
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Job description

System Administrator – Mid Level. 


Key Responsibilities


  • Maintain and support virtual servers both on-premises and in the cloud (Microsoft Azure, GCP, VMware).
  • Monitor and validate backups, troubleshoot incidents, and escalate complex issues when needed.
  • Support help desk teams by resolving system and infrastructure escalations.
  • Administer on-premises infrastructure including Active Directory, Windows Server 2022, Linux servers (Ubuntu), and application/web servers.
  • Manage Office 365 email accounts and Azure services.
  • Monitor and maintain firewalls (ASA) and switches.
  • Install and maintain IIS web servers; configure Apache/Nginx where required.
  • Apply system patches, security updates, and SSL certificate renewals.
  • Ensure high availability through clustering, load balancing, and redundancy configurations.
  • Maintain infrastructure services such as DNS, DHCP, Certificate Authority, and file servers.
  • Document procedures and contribute to knowledge sharing.

Technical Requirements


Core Skills:


  • Cloud administration experience (Microsoft Azure and/or Google Cloud Platform).
  • Strong Linux administration (Ubuntu) and Windows Server 2022 skills.
  • VMware vSphere hands-on experience.
  • Scripting ability (PowerShell, Bash).
  • Knowledge of networking fundamentals (Layer 2/Layer 3, VLANs, routing, switching).
  • Familiarity with web servers (IIS, Apache), SSL/TLS management, and HAProxy.
  • Backup and recovery experience (Veeam, SAN/NAS storage systems).
  • Monitoring tools experience (e.g., Zabbix).

Additional/Preferred Skills:


  • Familiarity with Docker, Git, GitHub.
  • Knowledge of Microsoft SQL Server administration.
  • Experience with Windows Server clustering and Linux HA.

System Administrator


  • Independent role supporting in the AU time zone.
  • Must be confident handling both routine tasks and escalations.
  • Expected to manage infrastructure proactively, ensure uptime, and coordinate with global IT leadership.
This job post has been translated by AI and may contain minor differences or errors.
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