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