Senior Architect - Microsoft Exchange Online
Core
Define architectural vision and lead end-to-end design, migration, and operational strategy for enterprise messaging platforms using Exchange Online within Microsoft 365.
Role type
Senior IC Microsoft Exchange Online Architect
Builds
Hybrid Exchange environments, large-scale migration plans, secure mail flow architectures, and operational models for enterprise messaging.
Domain
Financial Services / Enterprise Messaging & Collaboration
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
Exchange Online architecture, Exchange Server 2016/2019 hybrid design, large-scale migration planning, email security protocols (SPF/DKIM/DMARC), Microsoft 365 identity integration, capacity planning, disaster recovery design, mail flow troubleshooting, regulatory compliance (legal hold, retention), DNS/SMTP architecture, client protocol knowledge (MAPI, ActiveSync)
Preferred skills
Regulated industry experience, Microsoft certifications (MS-100/MS-101), tenant-to-tenant migration experience, Zero Trust messaging principles, multi-geo deployment experience
Technologies
Exchange Online, Exchange Server 2016/2019, Microsoft 365, Microsoft Purview, Microsoft Defender for Office 365, Microsoft Entra ID, Outlook, ActiveSync
Responsibilities
Design hybrid Exchange and coexistence models, lead large-scale mailbox migrations (10k+), architect secure messaging solutions with encryption and anti-spam controls, define operational models for monitoring and incident response, troubleshoot complex mail flow and connectivity issues, establish standards for mailbox sizing and transport rules
Seniority
Senior, hands-on IC