Senior Infrastructure EngineerCentral London - hybrid workingUp to £80,000 PA A well-established, growing business is seeking an experienced Senior IT Infrastructure Engineer to support both core infrastructure and MandA projects. This is a critical role during a period of ambitious expansion, including multiple acquisitions and integration of new sites. You will ensure seamless IT operations, business continuity and secure, resilient infrastructure across offices and acquired businesses.Key Responsibilities:Lead the assessment, integration and consolidation of IT environments during mergers and acquisitionsManage core office and site networks, including LAN/WAN, VPNs, IP addressing and firewall operations (FortiGate)Conduct audits of IT infrastructure, cloud environments (Azure, AWS) and enterprise applications (ERP, CRM)Plan and execute migrations, including tenant-to-tenant Microsoft 365 and Active Directory consolidationsCollaborate with managed service providers and internal teams to maintain high availability, security and complianceSupport business continuity through proactive monitoring, incident management and disaster recovery planningMentor and provide technical guidance to team members and act as an escalation point for complex issuesEssential Skills and Experience:Strong expertise in Azure, Microsoft 365, Windows Server and hybrid cloud environmentsNetworking: TCP/IP, DHCP, DNS, routing, switching, VPNs, firewall configuration; CCNA/CCNP preferredActive ..... full job details .....