Senior Infrastructure Engineer (Network focused) One of the UK''s leading entertainment groups (hospitality, leisure) requires a Senior Infrastructure Engineer is a senior technical role within the Group IT Operations function, focused primarily on supporting and maintaining the infrastructure estate The role is responsible for delivering 2nd Line infrastructure support, maintenance, patching, troubleshooting whilst seeking proactive operational improvement. The successful candidate will act as a key technical SME across Microsoft Azure, Microsoft 365, Networking, Switching, Firewalls, Wi-Fi and Zscaler environments, ensuring systems remain secure, available, supported and aligned to group standards and operational processes. This role combines operational support, technical administration and infrastructure project delivery, requiring strong troubleshooting capability, a proactive mindset and excellent collaboration skills across local territory teams, shared services and third-party suppliers. Key Accountabilities Infrastructure Operations andamp; Support Provide senior-level 2nd line support, including investigation, troubleshooting, and resolution of infrastructure and network incidents across multi-site environments. Proactively monitor, maintain, and optimise infrastructure performance through health checks, patching, and continuous improvement activities. Support and maintain enterprise infrastructure platforms, including: Microsoft Azure and Microsoft 365 Entra ID