Senior Systems Administrator

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South Africa
Salary not disclosed
contract
senior
Posted August 13, 2026
via himalayas

About This Role

Sr. Sys Administrator 12 month - Fully Remote Contract Responsibilities: • Manage and maintain the organization's IT infrastructure, including servers, networks, and storage systems. • Oversee the administration of Windows and Linux servers, ensuring optimal performance, security, and availability. • Implement and manage virtualization solutions, such as VMware or Hyper-V. • Develop and maintain backup and disaster recovery plans, ensuring data integrity and availability. • Monitor system performance and network connectivity, troubleshooting and resolving issues promptly. • Implement and enforce security policies, including firewalls, antivirus software, and intrusion detection/prevention systems. • Conduct regular security audits and vulnerability assessments, addressing any identified issues. • Manage user accounts, permissions, and access controls within Active Directory or other directory services. • Install, configure, and update software applications and operating systems. • Maintain detailed documentation of system configurations, procedures, and changes. • Generate and analyze reports on system performance, security incidents, and other relevant metrics. • Develop and maintain automation scripts for routine administrative tasks and system maintenance. • Ensure compliance with industry standards and regulatory requirements for IT systems. • Provide advanced technical support and troubleshooting for hardware, software, and network issues. • Lead and mentor junior IT staff, providing guidance and training as needed. • Collaborate with other IT teams and departments to ensure seamless service delivery and support. • Participate in the planning and execution of IT projects, including hardware and software rollouts, system migrations, and upgrades. • Identify opportunities for process improvements and implement solutions to enhance IT service quality and efficiency. • Stay updated with the latest technology trends, advancements, and best practices in systems administration. • Manage and maintain IT hardware inventory, including procurement, deployment, and asset tracking. • Provide input and recommendations for the continuous improvement of IT infrastructure and services. • Coordinate with vendors and service providers for issue resolution and service enhancements. • Participate in team meetings, providing updates on system status, ongoing projects, and any relevant issues. • Ensure effective incident response and problem management processes are in place and followed. • Lead initiatives to enhance user adoption and effective utilization of IT tools and resources. • Identify and mitigate risks associated with IT infrastructure and system changes. • Ensure the proper functioning of network and server monitoring tools and respond to alerts. • Oversee the implementation and management of cloud services and integrations with on-premises systems. • Manage and maintain Citrix environments, including XenApp, XenDesktop, and NetScaler, ensuring high availability and performance. • Troubleshoot and resolve issues related to Citrix infrastructure, including application delivery and user access. • Optimize Citrix environments for performance, scalability, and user experience. Originally posted on Himalayas

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