Senior Microsoft 365 Engineer
AIS (Applied Information Sciences) · Reston, VA · 5 days ago
Information Technology$121k–$182k/yrFull-time
Core Knowledge & Skills
- Aligns infrastructure strategy to business goals
- Led large projects
- Applies compliance frameworks
- Designs high availability/disaster recovery and performance optimization patterns
- Shapes deployment pipeline design
Key Responsibilities
- Support the unique needs of our client as a Senior Microsoft 365 Engineer
- Lead implementation, administration, and advanced support for Exchange Online in enterprise Microsoft 365 environments
- Engineer and maintain Exchange Hybrid configurations
- Troubleshoot escalated issues related to Exchange Hybrid, hybrid authentication, mail routing, mailbox provisioning, directory synchronization, client connectivity, and service interoperability
- Develop engineering standards, migration runbooks, validation procedures, rollback plans, and operational documentation to support repeatable delivery
- Provide technical leadership during discovery workshops, design sessions, cutover events, and post-migration stabilization efforts
- Support implementation of security-related controls affecting Exchange and identity
Required For This Opportunity
- 6–10+ years of experience engineering and administering Microsoft messaging and identity environments
- Deep hands-on experience with Exchange Online and Exchange Hybrid in enterprise environments
- Strong understanding of Exchange Server as it relates to hybrid coexistence, recipient management, mail routing, and legacy integration dependencies
- Strong experience with Microsoft Entra ID, Entra Connect / Azure AD Connect, hybrid identity, directory synchronization, and authentication troubleshooting
- Proven experience leading or executing large-scale Exchange migration efforts
- Advanced knowledge of SMTP, DNS, MX, SPF, DKIM, DMARC, autodiscover, and enterprise mail flow design and troubleshooting
- Strong PowerShell skills for Exchange Online, Microsoft 365, and automation of administrative or migration tasks
- Experience developing technical documentation, migration plans, cutover checklists, and post-deployment support artifacts
Nice To Have Skills
- Experience with tenant-to-tenant migration tools or third-party migration platforms
- Experience supporting Microsoft 365 projects in regulated, high-security, or large enterprise environments
- Familiarity with Microsoft Purview compliance features related to mailbox retention, eDiscovery, archive strategies, and data governance
- Knowledge of conditional access, identity protection concepts, and secure external access considerations that impact messaging and authentication
- Experience integrating Exchange and identity changes into broader Microsoft 365 transformation efforts
- Exposure to Teams, SharePoint Online, or other adjacent Microsoft 365 workloads
- Relevant Microsoft certifications in Microsoft 365, Exchange, Azure, or Identity and Access Management