Windows & Messaging Infrastructure Architect

• We are seeking a Principal Windows & Messaging Infrastructure Architect to provide technical leadership for a large-scale Microsoft infrastructure environment. This role will own the architecture, strategy, and modernization of Windows Server, Active Directory, Microsoft 365, and Exchange Online environments while helping drive the organization's long-term infrastructure roadmap.The ideal candidate brings deep expertise in enterprise Windows infrastructure, hybrid Microsoft environments, and Exchange Online administration and architecture. This individual will serve as a trusted advisor to infrastructure, security, and technology leadership teams.Key ResponsibilitiesLead the architecture and strategic direction of enterprise Windows Server environments.
• Serve as the subject matter expert for Exchange Online and Microsoft 365 messaging services.
• Design, manage, and optimize hybrid Microsoft environments integrating on-premises infrastructure with cloud-based services.
• Develop and maintain architecture standards for Active Directory, DNS, DHCP, Group Policy, and identity management.
• Lead Exchange Online initiatives including migrations, tenant administration, mail flow design, security, compliance, and lifecycle management.
• Partner with security teams to implement messaging security controls, retention policies, and compliance requirements.
• Evaluate infrastructure modernization opportunities and develop technical roadmaps.
• Provide technical leadership and mentorship to systems and infrastructure engineers.
• Assist with major incident resolution, root cause analysis, and infrastructure governance.

Interested candidates should submit resumes to sally.lander@roberthalf.(com).

Qualifications:

• 10+ years of experience in Microsoft infrastructure engineering or architecture roles.
• Expert-level experience with Windows Server environments.
• Deep experience with Exchange Online administration, architecture, and support.
• Strong understanding of Microsoft 365 services and cloud-based messaging platforms.
• Extensive experience with Active Directory, Group Policy, DNS, DHCP, and identity services.
• Experience supporting hybrid Exchange and Microsoft 365 environments.
• Strong PowerShell scripting and automation capabilities.
• Experience designing highly available, secure, and scalable enterprise infrastructure solutions.
• Preferred QualificationsMicrosoft Entra ID (Azure AD)
• Exchange migrations and modernization initiatives
• Microsoft Defender for Office 365
• Email security, compliance, retention, and governance
• VMware and/or Hyper-V
• Azure infrastructure services
• Enterprise backup and disaster recovery platforms
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Compensation

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