AD / On-Prem Infrastructure Support EngineerLocation:Reading - Fully Onsite (Client Site)Type:Contract - 6 MonthsSecurity Clearance:Active, Transferable DV Clearance (Mandatory)My client, a leading global IT services provider, is seeking an experienced Active Directory / On-Prem Infrastructure Support Engineer to join a secure IT environment. The role involves providing third-line Active Directory and infrastructure support, resolving complex technical issues and supporting infrastructure upgrades, migrations and modernisation projects.Key ResponsibilitiesProvide 3rd line support for complex Active Directory and infrastructure incidents.Administer Active Directory, Group Policy, DNS, DHCP and authentication services.Support Windows Server 2016 onwards and RHEL/Linux environments.Manage VMware vSphere and/or Hyper-V virtualisation platforms.Support SAN/NAS storage, backup and disaster recovery solutions.Perform server builds, patching, upgrades and vulnerability remediation using SCCM and WSUS.Support infrastructure migrations, modernisation and lifecycle projects.Perform root cause analysis, implement fixes and manage infrastructure changes.Maintain technical documentation and follow ITIL processes.Must-Have Skills and ExperienceActive, transferable DV Security Clearance.Proven 3rd line infrastructure support experience in an enterprise environment.Strong hands-on experience in either Active Directory or On-Prem Infrastructure, with good knowledge of the other.Experience ..... full job details .....