M365 Messaging EngineerThe M365 Messaging Engineer is responsible for the operational management and stability of Client's messaging environment, with a focus on Exchange Online and hybrid dependencies. This role ensures reliable mail flow, secure messaging integrations, and effective mailbox lifecycle management while supporting broader Microsoft 365 operations. The position is designed to absorb ongoing operational workload and allow senior engineers to focus on strategic and AI-driven initiatives.Key Responsibilities:Administer and support Exchange Online, including mail flow, transport rules, and mailbox provisioningManage hybrid Exchange dependencies and support ongoing coexistence requirementsMaintain and troubleshoot email security integrations (e.g., transport rules, third-party controls)Oversee mailbox lifecycle management, including provisioning, retention, and decommissioningResolve production issues related to messaging services and ensure SLA adherenceSupport general M365 operations, including cross-platform dependencies with Teams, SharePoint, and identity systemsDocument system configurations, runbooks, and standard operating proceduresQualifications:5+ years of experience with Exchange Online and Microsoft 365 messaging servicesExperience in hybrid Exchange EnvironmentsStrong understanding of mail flow, DNS, and email security controlsPowerShell or automation experience preferred