Senior Infrastructure Systems Admin — Windows, Linux & Cloud

Tech Junction Ltd; Doha; On-site; QAR 188,000 - 225,000; Full time

Job summary

WorkWavez in Doha, Qatar is seeking an experienced Infrastructure Systems Administrator to manage Windows, Linux, virtualization, and cloud environments in a large enterprise setting. The role focuses on high availability, security, performance, and operational resilience across critical IT systems.

The ideal candidate has at least 5 years in enterprise infrastructure, hands-on experience with VMware/Nutanix, and strong automation skills with Ansible, PowerShell, and Bash.

Qualifications

• Bachelor’s degree in computer science, information technology, or equivalent practical experience.
• Minimum 5 years of experience in enterprise infrastructure administration.
• At least 2 years of hands-on experience supporting both Windows Server and Linux environments.
• Strong expertise in Windows Server administration, clustering, and failover technologies.
• Advanced knowledge of Active Directory, Group Policy, and PowerShell scripting.
• Experience administering RHEL, CentOS, and Rocky Linux environments.
• Expertise in Linux patch management, security hardening, and performance tuning.
• Hands-on experience with VMware virtualization platforms.
• Experience managing Nutanix Hyperconverged Infrastructure (HCI) environments.
• Knowledge of VMware vSAN and Nutanix Prism.
• Experience supporting public cloud and hybrid cloud platforms.
• Strong understanding of enterprise backup, disaster recovery, and business continuity solutions.
• Proficiency in Ansible, Bash, and PowerShell automation.
• Experience with monitoring platforms such as Zabbix, Grafana, Nagios, SolarWinds, or equivalent tools.
• Knowledge of CIS benchmarks and infrastructure security best practices.
• Strong troubleshooting, analytical, and root cause analysis capabilities.
• Excellent communication and stakeholder management skills.

Responsibilities

• Administer and support Windows Server and Linux server environments.
• Manage Active Directory, Group Policy Objects (GPO), user administration, and identity services.
• Configure and maintain Windows clustering and failover solutions.
• Install, patch, secure, and optimize Red Hat Enterprise Linux (RHEL), CentOS, and Rocky Linux servers.
• Manage VMware and Nutanix virtualization and hyperconverged infrastructure platforms.
• Support VMware vSAN and Nutanix Prism environments.
• Administer public cloud and hybrid cloud infrastructure platforms.
• Implement and maintain backup, disaster recovery, and business continuity solutions.
• Automate operational tasks using Ansible, Bash, and PowerShell.
• Monitor infrastructure performance, health, and capacity using enterprise monitoring tools.
• Conduct root cause analysis and resolve complex infrastructure incidents.
• Implement infrastructure hardening and security controls based on industry best practices and CIS benchmarks.
• Maintain infrastructure documentation, operational procedures, and technical reports.
• Collaborate with security, network, application, and operations teams to ensure service reliability.

Skills

Windows/Linux administration

Active Directory & PowerShell

Cloud & virtualization

Automation with Ansible

Monitoring & troubleshooting

Education

Bachelor's Degree in CS/IT

Tools

VMware

Nutanix

RHEL/CentOS/Rocky Linux

PowerShell

Ansible

Grafana

Zabbix

Job description

WorkWavez in Doha, Qatar is seeking an experienced Infrastructure Systems Administrator to manage Windows, Linux, virtualization, and cloud environments in a large enterprise setting. The role focuses on high availability, security, performance, and operational resilience across critical IT systems.

The ideal candidate has at least 5 years in enterprise infrastructure, hands-on experience with VMware/Nutanix, and strong automation skills with Ansible, PowerShell, and Bash.