Job Description
Job#: 3030521 Job Description: Department: Unified Communications / Infrastructure Reports to: Senior Manager, Unified Communications Position Summary Our client is seeking an experienced Senior Microsoft Exchange Engineer to provide expert-level engineering, administration, and troubleshooting across complex Exchange on-premises, Exchange Online, and hybrid messaging environments . This role is critical due to the upcoming retirement of a senior SME, requiring immediate onboarding for knowledge transfer, documentation, and operational continuity . The ideal candidate will function as the highest-tier technical escalation point, lead advanced incident resolution, and ensure secure, compliant messaging architecture. This position offers a contract-to-hire path and an opportunity to shape modernization strategies for enterprise messaging. Key Responsibilities Exchange Administration & Engineering Design, configure, and maintain Exchange Server 2013/2016/2019 environments. Manage Exchange Online configuration, scaling, and optimization. Support and enhance Hybrid Exchange architectures (OAuth, hybrid mail flow, connectors, federation). Administer and troubleshoot DAGs and database replication Transport services and mail routing Autodiscover, EWS, MAPI/HTTP, ActiveSync Certificates, namespaces, and load balancing Migration & Knowledge Transfer Lead migrations from on-prem Exchange to Exchange Online (M365) via hybrid, cutover, staged, or third-party tools. Conduct mailbox migrations, PST ingestion, public folder migrations, and identity sync tasks. Document existing environment and processes for future reference. Collaborate with retiring SME for seamless knowledge transfer. Security, Compliance & Governance Manage and optimize: Exchange Online Protection (EOP) Microsoft Defender for Office 365 Anti-spam/anti-malware policies DLP and retention policies Investigate email spoofing, phishing, and transport anomalies. PowerShell & Automation Develop and maintain advanced PowerShell scripts for automation, reporting, and health monitoring. Build self-service capabilities where appropriate. Monitoring & Troubleshooting Serve as Tier 3 escalation for complex issues. Troubleshoot hybrid mail flow, OAuth failures, Autodiscover issues, and performance anomalies. Engage Microsoft Premier/Unified Support as needed. Identity & Integration Strong knowledge of: Azure AD Connect / cloud sync Conditional Access Authentication flows (Modern Auth, OAuth) Understand downstream integrations (Teams, MDM, security tooling). Required Skills & Qualifications 7–10+ years administering Exchange on-prem and Exchange Online at enterprise scale. Deep expertise in Exchange Server 2013/2016/2019 Exchange Online administration & PowerShell Hybrid configuration (HCW), mail flow, connectors DAG architecture and failover SMTP routing and transport rules Expert-level PowerShell scripting (complex modules, automation). Strong troubleshooting skills for mail flow, hybrid auth, DAG replication, DNS/cert issues. Familiarity with tools like RCA, Message Trace, Service Health Dashboard. Excellent documentation and communication skills. Preferred Qualifications Microsoft certifications: MS-203 (Messaging Administrator Associate) AZ-104 (Azure Administrator) Legacy MCSE/MCSA in messaging Experience with Third-party migration tools (Quest, BitTitan) Advanced M365 governance Mobile device management (Intune, Workspace ONE) Teams integration with Exchange Online Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the Unite