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.