Windows & VMware Administrator

Quantum World Technologies Inc.; Dallas (TX); On-site; USD 110,000 - 150,000; Full time

Job summary

Quantum World Technologies Inc. is seeking a Windows and VMware Administrator to support enterprise infrastructure in the Dallas area.

You will manage VMware Cloud Foundation, vSphere, NSX-T, vSAN, and Windows Server environments, ensuring stability, security and performance across production and non-production systems. The role involves hands-on troubleshooting, incident response, lifecycle management, automation with PowerShell/PowerCLI, and collaboration with network, security, and cloud

Qualifications

• 5–10 years of Windows and VMware administration experience.
• Hands-on VMware components: vSphere, VCF, ESXi, vCenter.
• Strong troubleshooting for app/OS/VMware outages.
• Experience with AWS cloud server management.
• Knowledge of OS migrations and upgrades.
• ITIL incident, change, and problem management.

Responsibilities

• Administer and support VMware Cloud Foundation, vSphere, ESXi, vCenter, NSX-T, and vSAN.
• Install, configure, maintain, upgrade, and patch Windows Server environments (2019/2022/2025).
• Perform Windows Server upgrades, migrations, and lifecycle management.
• Troubleshoot Windows Server performance, CPU, memory, storage, networking, services, apps.
• Monitor server health and performance for uptime and reliability.
• Support VMware upgrades, patching, and security remediation.
• Automate routine tasks using PowerShell, PowerCLI, and automation tools.
• Collaborate with networks, security, cloud, storage, and app teams.
• Follow ITIL processes for incidents, problems, changes, and service requests.
• Provide after-hours support and participate in maintenance and changes.

Skills

Windows administration

VMware administration

ITIL knowledge

Problem solving

Communication

Tools

VMware vSphere

VMware VC/ESXi

NSX-T

vSAN

PowerShell

PowerCLI

AWS

Job description

Job Title: Windows & VMware Administrator (Cloud Infrastructure Operations Engineer)

Duration: Long Term

We are seeking an experienced Windows & VMware Administrator to support and manage enterprise infrastructure environments for the City of San Diego. The ideal candidate will possess strong hands-on experience in Windows Server administration, VMware Cloud Foundation (VCF), vSphere, NSX-T, vSAN, and cloud technologies.

This role is responsible for maintaining the stability, security, performance, and availability of mission-critical infrastructure across production and non-production environments. The candidate should have experience handling infrastructure upgrades, migrations, P1/P2 incident resolution, performance optimization, and ITIL-based operational support.

Key Responsibilities:

• Administer and support VMware Cloud Foundation (VCF), vSphere, ESXi, vCenter, NSX-T, and vSAN environments.
• Install, configure, maintain, upgrade, and patch Windows Server 2019, 2022, and 2025 environments.
• Perform Windows Server operating system upgrades, server migrations, and lifecycle management activities.
• Troubleshoot and resolve Windows Server performance issues related to CPU, memory, storage, networking, services, and applications.
• Monitor server health, resource utilization, and system performance to ensure optimal availability, reliability, and operational efficiency.
• Support VMware infrastructure upgrades, lifecycle management, patching, and security vulnerability remediation activities.
• Troubleshoot and resolve virtualization, storage, networking, and operating system issues within enterprise environments.
• Perform root cause analysis (RCA) for critical incidents and implement corrective and preventive actions.
• Provide support for Priority 1 and Priority 2 incidents, including escalation management and timely resolution.
• Automate routine administrative and operational tasks using PowerShell, PowerCLI, and other automation tools.
• Collaborate with network, security, cloud, storage, and application teams to address infrastructure and operational challenges.
• Participate in infrastructure changes, patch deployments, maintenance activities, and after-hours support as required.
• Adhere to ITIL-based processes for Incident, Problem, Change, and Service Request Management.
• Utilize VMware Aria Operations and related Aria Suite tools for infrastructure monitoring, performance analysis, capacity planning, and operational reporting.
• Assist with infrastructure capacity planning, performance optimization, and continuous service improvement initiatives.
• Possess a basic understanding of cloud platforms, including AWS, Microsoft Azure, and Google Cloud Platform (GCP), and support hybrid cloud environments where applicable.

Required Skills & Experience

• 5-10 years of experience in Windows and Vmware system administration
• Hands-on experience with VMware (vSphere, VCF, ESXi, vCenter)
• Strong troubleshooting skills for application and OS and Vmware -level issues during outages
• Experience with AWS cloud server management
• Strong understanding of OS migrations and upgrades
• ITIL process knowledge (Incident, Change, Problem Management)

Good to Have

• Experience with automation tools (Shell scripting, Ansible, PowerShell, etc.)
• Exposure to enterprise monitoring and backup tools

Soft Skills

• Strong problem-solving and analytical skills
• Ability to work under pressure in critical situations
• Excellent communication and coordination skills

Certification (Preferred)