Infrastructure Systems Administrator (Windows/Linux)

About the Role

We are seeking a knowledgeable Infrastructure Systems Administrator specializing in Windows and Linux to oversee and optimize IT infrastructure for a premier sports venue in Doha, Qatar. The successful candidate will manage on-premises servers, cloud platforms, and hyperconverged infrastructure (HCI) environments to guarantee system reliability, security, and efficiency.

Key Responsibilities

• Continuously monitor server performance and resource usage using enterprise-grade tools such as Zabbix, Grafana, Nagios, or SolarWinds.
• Conduct routine backups, disaster recovery exercises, and verify data integrity regularly.
• Apply security patches, updates, and perform vulnerability assessments across the entire IT infrastructure.
• Enhance system configurations for optimal hardware utilization and virtualization management, especially with VMware and Nutanix platforms.
• Maintain detailed documentation related to system setups, operational processes, and incident handling.
• Manage and monitor cloud resources, including virtual machines, storage, and networking across public and hybrid environments.
• Support hybrid cloud integration efforts such as directory synchronization and identity-aware proxy implementations.
• Evaluate cloud resource costs and adjust scaling parameters accordingly.
• Troubleshoot cloud-specific issues and collaborate closely with cloud architects for complex deployments.
• Guarantee compliance with cloud security and governance standards.
• Administer Windows Server platforms including installation, configuration, clustering, and failover management.
• Oversee Linux servers—particularly Red Hat-based distributions like RHEL, CentOS, and Rocky Linux—with tasks encompassing shell scripting, package management, performance tuning, and security hardening.
• Automate server provisioning and maintenance using PowerShell scripts (Windows) and Ansible or Bash scripts (Linux).
• Identify root causes and resolve server-related incidents effectively.
• Manage Active Directory environments, including user/group policies, permissions, Group Policy Objects (GPOs), and Azure AD hybrid setups.
• Perform Active Directory health monitoring, security audits, and compliance checks.
• Integrate Active Directory with multiple systems for unified identity and access management.
• Implement least privilege access standards and regularly review access rights.
• Support directory services migrations, upgrades, and federation implementations as needed.
• Configure and manage hyperconverged infrastructure components such as nodes and storage pools for balanced workloads and high availability.
• Conduct failover clustering tests and disaster recovery validations.
• Apply firmware updates to HCI hardware and hypervisor software using vendor-specific tools like Nutanix Prism and VMware vSAN.

Candidate Requirements

• A minimum of 5 years of practical experience in IT infrastructure administration, including at least 2 years in Windows Server and Linux environments.
• Demonstrated expertise in managing hybrid IT infrastructure, involving public and hybrid cloud platforms.
• Bachelor's degree in Computer Science, Information Technology, or equivalent industry experience.
• Professional certifications preferred: Microsoft Certified Solutions Associate (MCSA), Red Hat Certified System Administrator (RHCSA), Nutanix or Dell VxRail certifications, VMware Certified Professional (VCP), and AWS or Azure cloud certifications.
• Strong proficiency in Windows Server administration covering Active Directory, Group Policy management, PowerShell automation, and server clustering.
• Advanced Linux administration skills focused on Red Hat-based systems, including installation, patch management, performance tuning, and security hardening.
• Hands-on knowledge of virtualization technologies, notably VMware and Nutanix implementations.
• Experience managing cloud infrastructures and services across public and hybrid environments.
• Expertise in enterprise backup solutions, disaster recovery protocols, and business continuity planning.
• Automation capabilities utilizing Ansible, PowerShell, and Bash scripting.
• Excellent analytical aptitude for diagnosing complex infrastructure issues and implementing long-term fixes.
• Strong documentation, communication, and collaboration skills essential for team and stakeholder engagement.