Senior IT Support EngineerWe are seeking a Senior IT Support Engineer with deep Microsoft ecosystem expertise and strong infrastructure support and operations experience to lead on infrastructure management, systems optimisation, and cyber security maturity. This role combines hands-on senior-level support, infrastructure ownership, and security leadership, ensuring secure, resilient, and high-performing IT services across the organisation.You will act as a technical escalation point, a Microsoft subject matter expert, and a key contributor to our strategic digital roadmap.Key ResponsibilitiesSystems, Infrastructure & Support OperationsProvide senior-level technical support and escalation across Microsoft-based infrastructure, acting as the final point of resolution.Lead infrastructure management, integration, automation, and optimisation, ensuring high availability and performance.Own and maintain core Microsoft platforms, including Microsoft 365, Entra ID (Azure AD), Intune, Exchange, and endpoint environments.Recommend and implement technologies that enhance resilience, security, scalability, and user experience.Maintain high standards of documentation, configuration management, change control, and service continuity.Support and mentor junior engineers, raising overall support capability and operational maturity.Work closely with stakeholders to translate business requirements into robust technical solutions.Microsoft Technologies ExpertiseAct as the organisation's subject matter expert for Microsoft technologies, including:Microsoft 365 administration and supportIdentity and access management (Entra ID / IAM)Endpoint management and device compliance via IntuneDefender XDR and Microsoft security toolingLead troubleshooting and optimisation of hybrid environments, including on-premise and cloud-integrated systems.Cyber Security & Infrastructure ProtectionDevelop and deliver the organisation's cybersecurity and infrastructure protection roadmap, aligned with standards such as Cyber Essentials and Cyber Essentials Plus.Manage and optimise security platforms covering:Endpoint protectionIdentity protectionDefender XDRConditional access and device complianceLead vulnerability assessments, threat modelling, incident response planning, and recovery testing.Strengthen information governance, data protection, and secure configuration baselines.Own security-focused change control, coordinate penetration testing, and manage remediation activity.Essential Skills & ExperienceStrong Microsoft support and administration background, with proven experience supporting complex, enterprise Microsoft environments.In-depth knowledge of Microsoft 365 security and management tools, including Defender XDR, Intune, IAM, and compliance features.Solid infrastructure support experience, including server, endpoint, identity, and cloud-integrated systems.Experience leading or contributing to Cyber Essentials or similar security frameworks.Excellent communication skills with the ability to explain complex technical issues to non-technical stakeholders.Proven ability to operate effectively in a hands-on senior support and infrastructure role.