Senior IT Support Analyst Infrastructure Support Engineer SaaS - Platform based Technology Services London/Hybrid Working £50-55k salary + benefits package Our client a global technology leader is currently looking for a Senior Infrastructure Support Engineer. Reporting to the Head of IT, the Senior Support Engineer plays a key role in supporting the network, infrastructure and users across all UK sites. This senior position provides technical leadership, owns complex escalations and drives operational maturity across the IT function. The engineer will work closely with the IT Service Desk, Infrastructure, Compliance, Legal and Global IT teams. Experience working in an ISO 27001 active environment, where controls, evidence capture and workflow adherence are part of daily tasks, is essential. Responsibilities (key tasks and requirements of the role) Lead escalations and complex technical issues across the IT estate Maintain and improve ISO-aligned workflows: access control, incident management, asset life cycle, change management Administration and support: Microsoft 365, Azure AD/Entra ID Intune configuration and compliance JIRA, CrowdStrike, Mimecast, ScreenConnect Exchange, SharePoint, Teams, M365 Office Suite Support OS deployment, endpoint hardening and infrastructure optimisation Be a point of escalations for support Desktop Engineers and ITSD staff Collaborate with Compliance, Operations and Global IT Contribute to process development, documentation and training ..... full job details .....