Senior IT Infrastructure & Support Engineer

Senior IT Infrastructure & Support Engineer

Horsham • £45,000 – £47,500 + Benefits

Are you a hands‑on Infrastructure Engineer who enjoys solving complex problems, owning systems end‑to‑end, and being the go‑to technical expert for your team? This Senior IT Infrastructure & Support Engineer role offers the chance to work across on‑prem and cloud environments, support business‑critical systems (including ERP), and play a key part in strengthening a growing IT function.

The role

As Senior IT Infrastructure & Support Engineer, you will take ownership of core infrastructure services, ensure the reliability and security of the IT estate, and provide high‑level support to users across the business. You\’ll work closely with the wider IT team on improvements and projects, while also acting as a technical mentor for junior colleagues.

Key responsibilities include:

• 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

Skills and experience

Essential:

• 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

Desirable:

• Experience using collaboration and tracking tools such as Jira and Confluence
• Experience with ERP systems (Epicor ideal), including day‑to‑day support and admin