M365 Messaging and Identity Architect

Role Overview

• Define end-to-end architecture for Exchange Online, Exchange Hybrid, and hybrid identity solutions in enterprise Microsoft 365 environments.
• Lead architectural planning for messaging modernization initiatives, including tenant onboarding, hybrid coexistence, cloud migrations, tenant-to-tenant transitions, and archive strategies.
• Develop architecture patterns for Exchange Online integration with on-premises Exchange, Microsoft Entra ID, identity synchronization services, mail hygiene platforms, and enterprise security controls.
• Design hybrid mail flow, authentication, namespace, routing, and coexistence strategies that support business continuity and phased migration execution.
• Establish migration strategies, wave planning frameworks, readiness criteria, cutover models, rollback approaches, and post-migration stabilization guidance for enterprise-scale programs.
• Evaluate and define target-state architectures for identity and messaging services, including synchronization scope, authentication dependencies, directory hygiene, object governance, and access control alignment.
• Lead technical assessments of current-state environments and translate findings into architectural recommendations, decision papers, roadmaps, and implementation guidance.
• Provide architectural oversight for complex issues involving mail routing, hybrid connectivity, directory synchronization, client authentication, legacy dependencies, and service interoperability.
• Partner with security and compliance stakeholders to ensure messaging and identity architecture aligns with regulatory obligations, audit expectations, retention requirements, and enterprise protection standards.
• Define engineering standards, design principles, reference architectures, and implementation guardrails for messaging and hybrid identity services.

Requirements

• 10+ years of experience in Microsoft messaging, identity, and enterprise infrastructure architecture.
• Microsoft 365 Certified: Administrator Expert (MS-102) Certification
• Identity and Access Administrator Associate (SC-300) Certification
• Deep expertise in Exchange Online and Exchange Hybrid architecture for large or complex environments.
• Strong experience with Exchange Server in support of coexistence, hybrid dependencies, recipient management, and legacy messaging integration.
• Strong experience with Active Directory and multi-domain and multi-forest scenarios.
• Advanced knowledge of Microsoft Entra ID, hybrid identity architecture, Entra Connect / Azure AD Connect, authentication models, and identity lifecycle dependencies.
• Proven experience architecting and guiding enterprise messaging migrations, including hybrid migrations, large-scale mailbox moves, tenant transitions, or coexistence programs.
• Advanced understanding of mail flow architecture, including SMTP routing, connector strategy, DNS dependencies, namespace planning, message hygiene, and secure relay patterns.

Tech Stack

• Azure
• Cloud
• DNS
• SMTP

Benefits

• Competitive Salaries
• Qualified Overtime
• Paid Time Off (PTO)
• Flexible Holiday Leave (88 hours per year)
• Parental Leave
• Immediate Healthcare: Medical, Dental, Vision, and Life Insurance
• Employee Stock Ownership Plan (ESOP)
• 401(k) Retirement Plan (5% match on base compensation, immediate 100% vesting)
• Tuition Reimbursement & Learning Allowance
• Referral Bonus Program (up to $5k)