Senior Infrastructure Engineer

• Provide first and second-line IT support to users across the business.
• Manage, prioritise and resolve IT support tickets, escalating where appropriate.
• Configure and deploy laptops, desktops and mobile devices for new starters.
• Manage onboarding and offboarding processes, including user accounts and permissions.
• Maintain and support core IT infrastructure, including servers, networking equipment and office technology.
• Administer user accounts across Microsoft 365, Microsoft Entra ID (Azure AD), Active Directory and Google Workspace.
• Monitor and troubleshoot networking issues including VPN connectivity, TCP/IP, DNS, DHCP and VLANs.
• Maintain IT asset registers, hardware inventory and documentation.
• Support backups, security updates and system maintenance.
• Help improve IT processes, documentation and day-to-day operational efficiency.

Technologies:

• Active Directory
• Azure
• Hardware
• Support
• Linux
• Microsoft 365
• Mobile
• PowerShell
• Security
• TCP/IP
• Ubuntu
• VPN
• VMware
• Veeam
• Windows
• Office 365
• Cloud
• DevOps, We are looking for an enthusiastic and proactive Senior Infrastructure Engineer to join our growing IT team in Oxford. This is an office-based role offering a competitive salary and excellent benefits. You will work as part of a collaborative IT function, supporting a fast-paced, technology-driven environment where IT systems, networks and end-user services must remain secure, reliable and highly available. We offer exposure to modern infrastructure technologies, the chance to work alongside experienced technical professionals, and a supportive environment where you can continue developing your technical expertise while making a real impact.

• Previous experience in an IT Support or IT Infrastructure Support role.
• Experience supporting Microsoft 365, Microsoft Entra ID (Azure AD) and Active Directory.
• Good understanding of networking fundamentals including TCP/IP, DNS, DHCP, VPNs and VLANs.
• Experience supporting Windows desktop environments and business IT infrastructure.
• Strong problem-solving skills with excellent communication and customer service.
• Ability to prioritise workloads and manage multiple support requests.
• Experience using IT helpdesk or ticketing systems.
• Google Workspace administration.
• VMware.
• Veeam Backup & Replication.
• PowerShell scripting.
• Linux administration (Ubuntu, Rocky Linux or similar).
• Dell PowerEdge server hardware.
• IT asset management and documentation.
• Security best practices and backup management.