Senior Exchange Engineer

Meriton•Tampa, FL

9d•Hybrid

About The Position

Meriton is a national team of experts driving HVAC innovation through a network of high-performing companies. From strategy and support to systems and solutions, we work behind the scenes to strengthen operations and build value—for our partners and our people. If you’re looking to make an impact, we’re glad you’re here. At Meriton, you’ll join a team that believes in big ideas, doing great work, and building careers that matter—every step of the way. Position Description Job Title: Senior Exchange Engineer Reports To: Senior Manager, Workforce Productivity FLSA Status: Exempt Location: Irving, TX; Phoenix, AZ; or Tampa, FL Summary: The Senior Exchange Engineer serves as a deep technical expert responsible for the engineering, administration, architecture, migration, and advanced support of the company's Microsoft Exchange and Microsoft 365 messaging environment. This role owns Exchange Online, Hybrid Exchange, mail flow, tenant-to-tenant migrations, and messaging-related integrations, ensuring the environment remains secure, reliable, scalable, and aligned with enterprise standards. This role works closely with the Workforce Productivity, Service Delivery, Infrastructure, Identity, and Cybersecurity teams, serving as an advanced technical escalation point for complex Exchange and messaging issues while maintaining clear accountability for platform engineering and operational excellence. This position requires travel to Meriton locations and customer sites across the U.S.

Requirements

7+ years of progressive IT experience with significant hands-on experience supporting Microsoft Exchange and Microsoft 365 messaging environments
Deep technical expertise in Exchange Online, Hybrid Exchange, and Microsoft Exchange Server
Demonstrated experience executing large-scale Exchange migrations, particularly on-premises-to-cloud and tenant-to-tenant migrations
Strong knowledge of Exchange architecture, SMTP, mail routing, connectors, accepted domains, Autodiscover, and mailbox management
Strong PowerShell scripting and automation skills
Working knowledge of Microsoft Entra ID, Entra ID Connect, authentication, and identity synchronization
Experience troubleshooting complex enterprise messaging, mail-flow, authentication, and migration issues
Demonstrated success working with Service Delivery teams while maintaining accountability for engineering and advanced escalation
Strong documentation, communication, collaboration, and problem-solving skills
Willing to be hands-on and resolve complex technical issues directly

Nice To Haves

Experience with third-party migration platforms such as Quest, BitTitan MigrationWiz, AvePoint, or similar technologies
Knowledge of Microsoft Defender for Office 365 and messaging-related security controls
Familiarity with Microsoft Purview, including retention, eDiscovery, litigation hold, and Exchange-related compliance capabilities
Experience with other Microsoft 365 platforms, including Teams, SharePoint Online, OneDrive, and Power Platform
Familiarity with enterprise security, compliance, governance, and service-management practices
Strong analytical, troubleshooting, and operational support capabilities

Responsibilities

Own the design, administration, and troubleshooting of enterprise-scale Microsoft Exchange Online and Hybrid Exchange environments
Drive technical decisions on Exchange architecture, configuration, platform health, resiliency, and lifecycle management
Manage mailboxes, shared mailboxes, distribution groups, resource mailboxes, permissions, transport rules, and related messaging services
Ensure reliable SMTP routing, connectors, accepted domains, Autodiscover, and hybrid mail flow through proactive configuration and troubleshooting
Maintain technical standards, documentation, configuration baselines, and operational procedures for Exchange services
Lead complex Exchange migrations, including on-premises to Exchange Online, tenant-to-tenant, Hybrid Exchange, and cross-forest or cross-organization migrations
Own migration assessments, planning, coexistence configuration, pilot migrations, cutovers, validation, and post-migration stabilization
Drive integrations between Exchange and other Microsoft 365, identity, collaboration, and enterprise platforms
Evaluate and apply native Microsoft migration capabilities and third-party migration tools where appropriate
Serve as the L2/L3 escalation point for Service Delivery on complex Exchange, mail-flow, mailbox, authentication, and messaging-related incidents
Lead troubleshooting and root-cause analysis for critical messaging outages and recurring service issues
Drive service reliability, platform health, change discipline, documentation, and production support readiness
Develop and maintain PowerShell-based automation for Exchange administration, reporting, migrations, and bulk operations
Partner with Microsoft and other technology vendors to resolve complex platform issues
Partner closely with Cybersecurity to ensure Exchange services and configurations align with enterprise security requirements
Own messaging-related security configurations, including SPF, DKIM, DMARC, anti-spam, anti-phishing, and mail-flow protections, based on established security standards
Ensure Exchange-related identity, authentication, permissions, and access-control requirements are met in coordination with Identity and Cybersecurity teams
Provide Exchange engineering support during cybersecurity investigations and incidents involving messaging systems
Maintain clear separation between Exchange platform administration and Cybersecurity ownership of security policy, governance, and security operations
Regular, consistent and necessary to meet the needs of the business
Assists the leadership team and other team members with various research projects and/or special projects
Performs other duties and responsibilities as assigned
Must conduct self in an ethical, legal, and responsible manner at all times
Must adhere to the policies, principles, and guidance within the Employee Handbook and Code of Conduct