We’re working with a global organisation to appoint a 3rd Line Infrastructure Engineer to support and evolve their enterprise IT environment. This is a senior, hands-on role with ownership of complex incidents, critical infrastructure, and high-impact projects across multiple sites. The Role \* Own and resolve 3rd line BAU and P1 incidents, including on-call rota \* Act as the senior escalation point for infrastructure and network issues \* Deliver and support infrastructure, network, and security projects \* Lead root cause analysis for major incidents and service outages \* Maintain high availability across servers, networks, and core platforms \* Support monitoring, change, and out-of-hours maintenance activities \* Mentor and support junior engineers Key Experience \* Proven 3rd line infrastructure engineering background (ideally MSP) \* Strong networking expertise (Cisco/HPE switches, routing, firewalls, wireless) \* Microsoft stack: Azure AD, Windows Server, Active Directory, GPO, O365, SCCM, RDS \* Virtualisation & storage: VMware, SAN (FC / iSCSI) \* Backup & recovery: Veeam (including M365) \* Linux (Ubuntu) exposure and automation experience beneficial \* Strong awareness of cyber security best practices Desirable \* Vendor certifications (Microsoft, Cisco, VMware, Juniper) \* PowerShell or scripting experience \* ITIL v4 This is an excellent opportunity to work in a global, business-critical environment with exposure to enterprise-scale infrastructure and long-term development