Johannesburg: IT Administrator posted by GMI Advisory

About the Role

The IT Administrator will oversee the installation, configuration, maintenance, and reliable operation of computer systems, servers, and network infrastructure in a fast-paced and dynamic environment. This role is responsible for managing both on-premises and cloud-based systems while ensuring high availability and security of business applications.

Key Responsibilities

• System Administration: Manage and maintain Windows, Active Directory, Linux, and virtual servers (Hyper-V), ensuring systems run smoothly with optimal performance.
• Network Management: Configure and monitor firewalls, VPNs, and network infrastructure to ensure secure and efficient data communication.
• Cloud Infrastructure: Oversee the operation of cloud services (Azure), implementing best practices for cloud architecture.
• Security Management: Implement security protocols and patches to ensure compliance with industry standards, responding proactively to emerging vulnerabilities.
• Backup & Recovery: Manage data backups, disaster recovery plans, and ensure data integrity through routine testing and verification.
• Monitoring & Performance Tuning: Use monitoring tools (e.g., Data Dog) to track system performance and resolve issues before they impact business operations.
• Documentation: Create and maintain comprehensive documentation related to systems, configurations, procedures, and troubleshooting.
• Mentorship & Training: Mentor junior system administrators, providing guidance and knowledge transfer to improve team performance and efficiency.
• Project Management: Lead infrastructure upgrade projects, system migrations, and continuous improvement initiatives.
• Compliance: Ensure all systems are compliant with regulatory requirements, company policies, and industry best practices (e.g., NIST & ISO).
• Troubleshooting: Provide advanced troubleshooting and support for complex issues, working closely with the IT support team and other departments.
• Penetration Tests and vulnerability assessments
• Back-up and disaster recovery (Veeam Back-up and Replication)
• Zimbra E-Mail and Collaboration
• Microsoft Active Directory Domain Controllers
• Hyper-V Virtualization
• Anti-Virus System (KASPERSKY)
• Website editing and updates
• Server Rack Management
• Licensing
• Local Area Networks
• Management of existing Wide Area Network
• Cabling
• Ubiquiti Experience (Unifi, AirMax)
• Mikrotik
• VPN access and support
• VOIP
• CCTV
• Audio Visual Support
• Virtual platforms (Zoom, Teams etc.)
• GLPI Helpdesk
• Squid Proxy Server
• Fusion Inventory
• AD Audit Plus
• Microsoft teams
• Firewalls

Requirements

• IT Diploma or Bachelors Degree
• MCSE or equivalent
• CCNA N, A