Tasks Senior Microsoft 365 Engineer Location: London, UK Contract: 4-Month Fixed Term Contract Onsite role Role Summary We are seeking an experienced Senior Microsoft 365 Engineer to design, implement, administer, and optimize Microsoft 365 services across a large enterprise environment. The role focuses on collaboration, messaging, identity, security, governance, and automation within the Microsoft ecosystem. Key Responsibilities Design and support Microsoft 365 services including Exchange Online, Teams, SharePoint Online, OneDrive, Power Platform, and Entra ID. Provide Tier 3 support for complex identity, collaboration, and messaging issues. Manage Microsoft 365 tenant administration, licensing, governance, and user lifecycle management. Implement and maintain security, compliance, retention, and information protection solutions. Administer Entra ID, Hybrid Identity, Conditional Access, MFA, and Identity Governance. Manage Exchange Online mail flow, transport rules, messaging security, and hybrid environments. Develop automation using PowerShell and Microsoft Graph API. Monitor platform health, performance, security, and adoption trends. Create technical documentation, operational procedures, and knowledge articles. Collaborate with security, infrastructure, and business teams on enterprise solutions. Mentor junior engineers and contribute to Microsoft 365 roadmap and architecture decisions. Requirements Required Skills & Experience 7+ years of infrastructure/platform engineering experience. 5+ years of Microsoft 365 engineering and administration experience. Strong hands-on expertise in: Exchange Online Microsoft Teams SharePoint Online OneDrive for Business Microsoft Entra ID Power Platform Experience with: Hybrid Identity and Active Directory integration Conditional Access and MFA Microsoft Purview, DLP, Sensitivity Labels, Retention & eDiscovery PowerShell scripting and automation Microsoft Graph API Enterprise-scale Microsoft 365 environments Governance, security, and compliance frameworks Git/GitHub Preferred Skills Microsoft Defender for Office 365 Microsoft Defender XDR Microsoft Copilot for Microsoft 365 Power Apps, Power Automate, and Power BI administration Multi-tenant/global Microsoft 365 environments Certifications (Preferred) Microsoft 365 Certified: Enterprise Administrator Expert Microsoft Certified: Identity and Access Administrator Associate Microsoft Certified: Messaging Administrator Associate