These jobs were popular with other job seekers American International School of Johannesburg American International School of Johannesburg Senior System Administrator will be responsible for ensuring the stability, security, and efficient operation of our company's IT infrastructure. This role requires strong technical knowledge of Linux and Windows administration, networking, and proficiency in managing hypervisors such as VMware or Hyper-V and Proxmox, along with experience in managing Azure cloud environments. Duties&Responsibilities Linux and Windows System Administration: - Install, configure, and maintain Linux and Windows servers and workstations. - Manage user accounts, permissions, and file systems on both platforms. - Perform regular system monitoring, troubleshooting, and performance tuning. - Conduct security audits and implement necessary measures to protect systems and data. - Create and maintain system documentation, including configuration and troubleshooting guides. Azure Cloud Management: - Deploy, configure, and manage virtual machines and other resources in Azure. - Monitor cloud infrastructure for availability, performance, and security. - Implement and manage virtual networks, subnets, and network security groups. - Develop and maintain Azure Resource Manager (ARM) templates for infrastructure automation. - Ensure proper backup, disaster recovery, and business continuity plans for cloud-based systems. - Install, configure, and maintain hypervisor platforms, preferably Proxmox. - Manage virtual machines, templates, snapshots, and virtual networks. - Optimize and monitor hypervisor performance and resource allocation. Implement and manage high availability and fault tolerance features. - Container Management. - Deploy, configure and maintain Docker containers. - Deploy, configure and maintain a container orchestration platform such as Kubernetes. Network Administration: - Configure and maintain network devices, such as routers, switches, and firewalls. - Troubleshoot network connectivity issues and optimize network performance. - Implement and maintain VPN connections and remote access solutions. - Monitor and manage network security, including intrusion detection and prevention systems. System Monitoring and Performance: - Deploy and maintain monitoring tools for proactive system monitoring and alerting. - Analyse system performance data, identify bottlenecks, and optimize system resources. - Conduct capacity planning to ensure system scalability and meet business requirements. - Collaborate with development teams to optimize application performance on the infrastructure. Documentation and Collaboration: - Create and maintain technical documentation, including system configurations, procedures, and troubleshooting guides. - Collaborate with cross-functional teams to provide technical support and solutions. - Participate in on-call rotations and respond to system emergencies promptly. - Stay up to date with industry trends, emerging technologies, and best practices in system administration, cloud computing, and virtualization. Desired Experience&Qualification - Bachelors degree in computer science, Information Technology, or a related field (or equivalent work experience). - Relevant certifications, such as Linux Professional Institute (LPIC), Microsoft Certified: Azure Administrator Associate advantageous. - Excellent problem-solving skills and the ability to work independently and in a team environment. - Strong communication and interpersonal skills to effectively collaborate with stakeholders at all levels. Package&Remuneration R65 000 - R80 000 CTC These jobs were popular with other job seekers American International School of Johannesburg #J-18808-Ljbffr