Senior IT Systems Administrator — Remote, Citrix & Cloud

Optimal Growth Technologies; South Africa; Remote; ZAR 500,000 - 900,000; Full time

Job summary

Optimal Growth Technologies in South Africa is seeking a Sr. Systems Administrator for a 12-month fully remote contract.

You will manage and maintain IT infrastructure, including servers, networks, storage, and virtualization via VMware or Hyper-V, ensuring reliability and security. Responsibilities cover backup and disaster recovery, security policies, AD user management, Citrix environments (XenApp/XenDesktop), cloud integrations, and leading IT projects.

Responsibilities

• Manage and maintain 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.

Job description

Optimal Growth Technologies in South Africa is seeking a Sr. Systems Administrator for a 12-month fully remote contract.

You will manage and maintain IT infrastructure, including servers, networks, storage, and virtualization via VMware or Hyper-V, ensuring reliability and security. Responsibilities cover backup and disaster recovery, security policies, AD user management, Citrix environments (XenApp/XenDesktop), cloud integrations, and leading IT projects.