Salary: £45,000 - 45,000 per year Requirements: 10 years hands-on experience in IT infrastructure roles, with at least 5 years in a senior or lead capacity. Strong expertise in Microsoft Azure IaaS & PaaS, Active Directory, Group Policy, DNS, DHCP, Windows Server 2019-2022, and SQL Server administration. Deep understanding of LAN/WAN design, VLANs, VPNs, routing, switching, and firewall management. Experience with Microsoft 365, Intune, and Endpoint Manager. Advanced PowerShell scripting and automation skills. Proven experience managing secure environments aligned with Cyber Essentials Plus or ISO 27001. Ability to work independently, prioritise effectively, and deliver projects to completion with minimal supervision. Degree in Computer Science, Information Technology, or equivalent experience. Desirable certifications include Microsoft Certified: Azure Administrator Associate (AZ-104) or Azure Solutions Architect Expert (AZ-305), MCSE, CompTIA Network, ITIL Foundation. Responsibilities: Implement and maintain hybrid infrastructure solutions (Azure and on-prem) that meet performance, security, and compliance requirements. Manage and optimise Windows Server, SQL Server, and Azure environments including Virtual Machines, Networking, Storage, Backup, and Monitoring. Maintain and secure Active Directory, Group Policy, DNS, DHCP, and Azure AD (Entra ID) synchronisation. Ensure high availability and resilience across all servers, networks, and databases supporting business-critical applications. Deliver advanced troubleshooting and root cause analysis for complex infrastructure issues. Proactively identify opportunities for improvement, automation, and optimisation across all infrastructure areas. Maintain alignment with Cyber Essentials Plus & GDPR, implement and manage endpoint protection, patch management, and vulnerability remediation. Ensure data protection and system continuity through effective backup, disaster recovery, and business continuity planning. Automate deployment and maintenance tasks using PowerShell, Azure Automation, or equivalent tools. Maintain infrastructure observability through tools and optimise cost, performance, and utilisation of Azure and on-prem resources. Technologies: Active Directory Architect Azure Cloud Firewall IaaS ITIL LAN Microsoft 365 Network PaaS PowerShell SQL Security Windows Office 365 DevOps More: We are seeking a Senior IT Infrastructure Engineer to work for our client based in Abingdon. This role involves the implementation and ongoing management of IT infrastructure across both on-premises and Azure cloud environments. The ideal candidate will be a proactive professional capable of leading projects from concept to completion and ensuring the delivery of robust, secure, and scalable infrastructure solutions. We offer a competitive salary of £45,000 and a collaborative work environment. last updated 16 week of 2026