Sr. Systems Administrator

Integrity Staffing Solutions; Town of Newark (WI); On-site; USD 90,000 - 120,000; Full time

Job summary

Integrity Staffing Solutions in Newark, DE is seeking a Senior IT Infrastructure Administrator to manage Windows, Linux, AD, virtualization, Microsoft 365, and cloud environments, ensuring secure, reliable systems.

The role supports lifecycle planning, disaster recovery, automation, and on-call rotation, requiring strong troubleshooting and project management skills, with ability to work independently and on-site.

Qualifications

• Bachelor’s degree in CS/IT or related field or equivalent experience.
• 5+ years of systems administration experience.
• 3+ years with virtualization platforms such as VMware, Hyper-V, Citrix Hypervisor, Nutanix AHV, or Linux KVM.
• Strong experience with Active Directory, Windows Server, DNS, DHCP, Group Policy, and email administration.
• Hands-on Microsoft 365 administration experience.
• Familiarity with Azure or AWS.
• Strong troubleshooting, project management, communication, and organizational skills.
• Ability to work independently and manage multiple priorities.

Responsibilities

• Administer Windows and Linux servers, Active Directory, GPO, DNS, DHCP, identity management, and authentication services.
• Manage physical, virtual, and cloud infrastructure, including VMware and Azure/AWS environments.
• Support Microsoft 365, Exchange Online, SharePoint Online, Intune, and Autopilot.
• Maintain backups, storage, monitoring tools, patching, vulnerability remediation, and disaster recovery capabilities.
• Implement infrastructure upgrades, automation, new technologies, and performance improvements.
• Support infrastructure planning, budgeting, vendor management, licensing, audits, and regulatory compliance.
• Participate in rotating 24/7 on‑call production support.

Skills

Windows administration

Linux administration

Active Directory

Cloud infrastructure

Project management

Education

Bachelor’s degree in Computer Science or related field

Tools

VMware

Hyper-V

Citrix Hypervisor

Nutanix AHV

Linux KVM

Azure

AWS

Microsoft 365

Job description

Senior IT Infrastructure Administrator

Our client is hiring a highly experienced IT Infrastructure professional to manage and support our Windows, Linux, Active Directory, virtualization, Microsoft 365, and cloud environments. This hands‑on role will maintain secure, reliable systems while supporting infrastructure projects, lifecycle planning, compliance, disaster recovery, and continuous improvement.

This position is a direct placement with the client and must work on‑site in Newark, DE.

Key Responsibilities

• Administer Windows and Linux servers, Active Directory, GPO, DNS, DHCP, identity management, and authentication services
• Manage physical, virtual, and cloud infrastructure, including VMware and Azure/AWS environments
• Support Microsoft 365, Exchange Online, SharePoint Online, Intune, and Autopilot
• Maintain backups, storage, monitoring tools, patching, vulnerability remediation, and disaster recovery capabilities
• Implement infrastructure upgrades, automation, new technologies, and performance improvements
• Support infrastructure planning, budgeting, vendor management, licensing, audits, and regulatory compliance
• Participate in rotating 24/7 on‑call production support

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent experience
• Five or more years of systems administration experience
• At least three years of experience with virtualization platforms such as VMware, Hyper‑V, Citrix Hypervisor, Nutanix AHV, or Linux KVM
• Strong experience with Active Directory, Windows Server, DNS, DHCP, Group Policy, and email administration
• Hands‑on Microsoft 365 administration experience
• Familiarity with Azure or AWS
• Strong troubleshooting, project management, communication, and organizational skills
• Ability to work independently and manage multiple priorities

Active Directory | Windows Server | Oracle Linux | VMware | Shared Storage | Microsoft 365 | Exchange | SharePoint | Intune | Autopilot | Backup and Recovery