Salary: £45,000 - 47,500 per year Requirements: Strong experience in Windows Server environments: AD, Group Policy, DNS/DHCP, file/print Excellent understanding of Azure AD, Exchange Online, Office 365 and cloud identity Working knowledge of Hyper-V, Veeam, WSUS, certificate services and endpoint management tools (such as ManageEngine) Familiarity with security tools and concepts: endpoint protection, email filtering, monitoring/SIEM or extended AV Good understanding of networking fundamentals: TCP/IP, VLANs, firewalls and general troubleshooting Experience using collaboration and tracking tools such as Jira and Confluence (desirable) Experience with ERP systems (Epicor ideal), including day-to-day support and administration (desirable) Responsibilities: Providing advanced technical support for infrastructure, applications, and end-user devices Maintaining and supporting Windows Server, Active Directory, Group Policy, DNS/DHCP, file/print services Supporting Azure AD, Exchange Online, Office 365 and cloud identity services Administering and troubleshooting Hyper-V environments, Veeam backups, WSUS, certificate services and endpoint management tools (e.g. ManageEngine) Contributing to IT security by supporting endpoint protection, email filtering, monitoring and other cybersecurity tools Identifying opportunities for automation, standardisation and process improvement within IT operations Acting as a technical mentor to junior team members, sharing knowledge and providing informal training and guidance Producing clear documentation of solutions, processes and best practices Taking part in disaster recovery planning, testing and service continuity initiatives Technologies: Active Directory Azure Cloud Confluence ERP Hyper-V Support JIRA Office 365 Security TCP/IP Veeam Windows More: We are a dynamic IT team based in Horsham, looking for a Senior IT Infrastructure & Support Engineer. In this hands-on role, youll enjoy solving complex problems and owning systems end-to-end while providing support across both on-prem and cloud environments. We value personal and professional development; therefore, you will have the opportunity to mentor junior colleagues and contribute significantly to our growing IT function. We offer a salary range of £45,000 – £47,500 along with benefits. last updated 5 week of 2026