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IT Systems Administrator

CREGG
Department:Education
Type:REMOTE
Region:Kerry
Location:Cork, County Cork, Ireland
Experience:Mid-Senior Level
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Job Description

Posted on: September 5, 2026

IT Systems Administrator

Our Cork based client are thriving IT Services provider & are now recruiting for an experienced IT Systems Administrator to join their team. The IT Systems Administrator will be responsible for designing, implementing, supporting, and maintaining IT infrastructure for a diverse portfolio of business clients.

The IT Systems Administrator will have expertise across Microsoft technologies, cloud platforms, networking, cybersecurity, virtualization, and end-user support.


Key Responsibilities

  • Design, deploy, and maintain client IT environments
  • Administer Windows Server environments and Active Directory services
  • Manage Microsoft 365 tenants, including Exchange Online, SharePoint, Teams, and Entra ID
  • Configure and maintain virtualization platforms such as VMware and Hyper-V
  • Monitor system performance, availability, and capacity planning
  • Deploy and support Microsoft Azure environments
  • Implement cloud migration projects
  • Manage hybrid cloud infrastructure solutions
  • Configure backup, disaster recovery, and business continuity solutions
  • Monitor cloud security and compliance requirements
  • Configure and support firewalls, switches, wireless networks, and VPN solutions
  • Troubleshoot complex networking issues
  • Maintain network security and performance
  • Document network infrastructure and configuration
  • Deliver exceptional customer service to business clients
  • Communicate technical solutions clearly to both technical and non-technical stakeholders
  • Lead infrastructure implementation and migration projects



Key Requirements

  • 5 plus years' experience in a Systems Administrator or Senior Infrastructure role
  • Strong experience with
  • Microsoft 365 Administration
  • Windows Server (2016/2019/2022)
  • Active Directory and Group Policy
  • Microsoft Entra ID (Azure AD)
  • Exchange Online
  • Microsoft Azure
  • VMware vSphere and/or HyperV
  • Networking (TCP/IP, DNS, DHCP, VLANs, VPNs)
  • Firewall technologies
  • Backup and Disaster Recovery solutions
  • PowerShell scripting and automation
  • Endpoint security and cybersecurity best practices
  • Proven experience managing multiple clients simultaneously.
  • Experience delivering infrastructure and cloud migration projects.
  • Strong troubleshooting and root-cause analysis skills.
  • Experience with IT monitoring and remote management tools.
  • Excellent communication and customer service skills.
  • Strong problem-solving and analytical abilities.
  • Ability to work independently and as part of a team.
  • Highly organised with strong attention to detail.
  • Ability to prioritise workloads in a fast-paced environment.
  • Full clean drivers license
Originally posted on LinkedIn

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