Senior Infrastructure Engineer

Salary: £55,000 - 55,000 per year

Requirements

: 4-5 years in a similar senior IT/networking roleStrong expertise with Cisco routers & switchesProficient in TCP/IP networking, firewalls (Fortinet), and IT securityExperience with Windows Server (2016/2019/2022) and Hyper-VKnowledge of Active Directory & Azure ADFamiliarity with Microsoft Azure, Office 365, and IntuneSupport for Windows 10/11 & Apple devices (MDM/Meraki)Experience with backup & disaster recovery solutionsStrong communication and customer-facing skillsSQL Server experience beneficial Responsibilities: Design, implement, and support secure, scalable network solutions across multi-site customer environments.Lead the delivery of network and core infrastructure projects, including new installations, upgrades, and migrations.Manage and maintain on-prem and cloud infrastructure, ensuring high availability, performance, and security.Provide senior-level support for routing, switching, firewalls, VPNs, and WAN connectivity.Administer and support Windows Server environments, virtualised platforms (Hyper-V), and associated services.Support and optimise Microsoft cloud technologies, including Azure, Azure AD, Office 365, and Intune.Monitor infrastructure performance, capacity, and security; proactively identify risks and improvement opportunities.Implement and maintain security policies, patching, firmware updates, and disaster recovery solutions.Act as an escalation point for complex technical issues, providing remote and on-site support where required.Produce and maintain high-quality technical documentation, including network diagrams, configurations, and procedures.Work closely with senior management and other technical teams to define standards, policies, and best practices.Provide technical guidance, mentoring, and oversight to junior engineers and field teams. Technologies: Active DirectoryAzureCloudCiscoFirmwareHyper-VSupportNetworkOffice 365SQLSecurityTCP/IPWindowsDevOps More: We are a well-established IT solutions provider with over 30 years of experience supporting 400 client sites nationwide. We offer a competitive salary of up to £55,000 with a performance-related bonus, along with

Benefits

such as a company car, company pension, private healthcare, flexible working schedule, employee discounts, and profit-share eligibility after 12 months. Our team is committed to delivering secure, scalable, and high-quality IT solutions, and we are looking for a customer-focused Senior IT Engineer to join us on-site in Abingdon, Oxfordshire. last updated 28 week of 2026