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Job DescriptionAll potential candidates should read through the following details of this job with care before making an application.Role: Senior Infrastructure Engineer Location: Abingdon, OxfordshireSalary: Up to 55,000 + performance-related bonusType: On-site, PermanentJoin a well-established IT solutions provider with over 30 years' experience supporting 400+ client sites nationwide. We're looking for a customer-focused Senior IT Engineer with strong networking expertise to join the growing team.The RoleYou'll lead and support networking projects, manage infrastructure, and provide remote and on-site support. You'll work closely with customers and internal teams to deliver secure, scalable, and high-quality IT solutions.Key ResponsibilitiesDesign, 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. xjdpvnf Provide technical guidance, mentoring, and oversight to junior engineers and field teams.Key Skills & Experience4-5 years in a similar senior IT/networking roleCisco routers & switchesTCP/IP networking, firewalls (Fortinet), and IT securityWindows Server (2016/2019/2022), Hyper-VActive Directory & Azure ADMicrosoft Azure, Office 365, IntuneWindows 10/11 & Apple device support (MDM/Meraki)Backup & disaster recovery solutionsStrong communication and customer-facing skillsSQL Server experience beneficialWhat We OfferCompany CarCompany pensionPrivate healthcare & group life coverFlexible working scheduleEmployee discountsProfit-share eligibility after 12 months