Senior Exchange Architect – Hybrid | On-Prem & Online

Resonaite; Ottawa; On-site; CAD 110,000 - 165,000; Full time

Job summary

Resonaite is seeking a Senior Microsoft Exchange Consultant/Architect to design, implement, and support Exchange Server Subscription Edition on-premises and Exchange Online with hybrid architecture. You will lead high-availability, DR, and mail-flow initiatives while guiding identity strategies across AD/Entra.

Strong PowerShell and enterprise collaboration are essential. The role requires onsite work in Ottawa, with a 6-month contract to start.

Qualifications

• Extensive senior-level experience designing and supporting Microsoft Exchange in large, complex enterprise environments.
• Deep hands-on experience with Exchange Server Subscription Edition (on-premises), Exchange Online, and Exchange Hybrid.
• Strong Exchange architecture expertise including high availability, disaster recovery, mail flow, SMTP, security, performance, and capacity planning.
• Strong experience with Active Directory, Microsoft Entra ID, Entra Connect, and hybrid identity.
• Strong PowerShell scripting and automation skills.
• Experience with Microsoft 365, DNS, certificates, load balancing, gateways, and Exchange monitoring.
• Strong architecture, troubleshooting, documentation, and technical leadership skills.
• Familiarity with ITSM/change-management tools such as ServiceNow.
• Must be eligible to obtain the required House of Commons security clearance and able to work onsite in Ottawa as required.

Responsibilities

• Provide senior-level architecture and technical expertise for Exchange Server on-premises, Exchange Online, and Exchange Hybrid environments.
• Design, implement, optimize, and modernize enterprise Exchange and messaging solutions.
• Architect solutions for high availability, disaster recovery, resiliency, performance, and scalability.
• Analyze and resolve complex mail flow, SMTP, transport, integration, authentication, and Exchange infrastructure issues.
• Provide architectural guidance across Active Directory, Entra ID, Entra Connect, and hybrid identity.
• Develop PowerShell automation for Exchange administration, reporting, and operational efficiencies.
• Collaborate with infrastructure, security, networking, and identity teams to ensure alignment with Microsoft and enterprise standards.
• Develop architecture documentation, technical designs, implementation plans, and roadmaps.
• Provide technical leadership, mentoring, and knowledge transfer to internal teams.

Skills

Exchange Server Subscription Edition

Exchange Online

Exchange Hybrid

High availability

Disaster recovery

Mail flow / SMTP

Active Directory / Entra ID / Entra ID

PowerShell scripting

Microsoft 365 / DNS / certificates

Hybrid identity architecture

Tools

PowerShell

ServiceNow

Job description

Resonaite is seeking a Senior Microsoft Exchange Consultant/Architect to design, implement, and support Exchange Server Subscription Edition on-premises and Exchange Online with hybrid architecture. You will lead high-availability, DR, and mail-flow initiatives while guiding identity strategies across AD/Entra.

Strong PowerShell and enterprise collaboration are essential. The role requires onsite work in Ottawa, with a 6-month contract to start.