Senior M365 Systems Engineer (Messaging & Collaboration)

Overview

Edgewater Federal Solutions is seeking a Senior M365 Systems Engineer (Messaging & Collaboration) to support our team in Washington, D.C. 

Responsibilities

Exchange On-Premises Administration (20%)

• Manage and maintain Microsoft Exchange Server 2016/2019/SE infrastructure including mailbox databases, DAGs, and high availability
• Perform server maintenance, patching, certificate management, and capacity planning
• Troubleshoot mail flow issues, connectivity problems, and performance bottlenecks
• Configure transport rules, connectors, and Client Access Services
• Manage integration with Enterprise Vault for legacy archive access

Exchange Online Administration (20%)

• Administer Microsoft 365 Exchange Online environment and hybrid configuration
• Manage mailbox migrations from on-premises to Exchange Online
• Configure Exchange Online Protection (EOP), DLP policies, and mail flow rules
• Implement retention policies, eDiscovery, and compliance features
• Monitor service health and manage M365 compliance requirements
• Oversee migration from Enterprise Vault to M365 native archiving/retention

Microsoft Teams Administration (25%)

• Administer Teams environment including team/channel governance and lifecycle policies
• Configure Teams voice features including Direct Routing, calling policies, and phone system
• Manage Teams apps, bots, custom integrations, and connector policies
• Implement Teams compliance including retention, eDiscovery, communication compliance, and information barriers
• Configure guest access, external access, meeting policies, and live events
• Troubleshoot Teams connectivity, quality issues, and client problems
• Manage Teams device administration (phones, room systems, displays)

Email Security & Proofpoint Administration (15%)

• Administer Proofpoint Email Security platform and configure filtering policies
• Manage threat protection including TAP, URL Defense, and Attachment Defense
• Monitor and respond to security incidents and phishing campaigns
• Implement and maintain email authentication (DMARC, SPF, DKIM) and encryption
• Generate compliance and security reports

M365 Ecosystem & Power Platform Support (10%)

• Support Power Automate flows integrating with Exchange, Teams, and SharePoint
• Assist with Power Platform governance, DLP policies, and connector security
• Maintain integration points between SharePoint Online, OneDrive, and Teams
• Support automation solutions leveraging M365 services
• Understand licensing implications across M365 workloads

Automation & Scripting (10%)

• Develop and maintain PowerShell scripts for Exchange, Teams, and M365 automation
• Utilize Microsoft Graph API for advanced automation and reporting
• Create bulk operation scripts for user provisioning, migrations, and configuration changes
• Automate routine administrative tasks and reporting
• Document and maintain script libraries and automation workflows

Additional Duties

• Participate in on-call rotation to provide Tier 2 support for M365 Platform
• Provide Tier 3 support for escalated email and Teams issues
• Document configurations, maintain procedures, and train staff
• Collaborate with IT security and compliance teams on email and collaboration security initiatives
• Assist with M365 governance and adoption planning

Qualifications

• 3-5 years email and collaboration platform administration experience
• Microsoft Exchange Server (2016 or later) administration experience
• Exchange Online and Microsoft 365 administration experience
• Microsoft Teams administration experience
• Proven experience with hybrid Exchange environments and cloud migrations
• PowerShell scripting experience for automation and bulk operations
• Email security platform administration (Proofpoint preferred)
• Exchange & Email
  • Exchange Server 2016/2019/SE and Exchange Online administration
  • Hybrid Exchange configuration and coexistence management
  • Email security protocols (SPF, DKIM, DMARC, TLS/SSL, MTA-STS)
  • Mail flow troubleshooting and transport rule configuration
  • Mailbox migration tools and methodologies
• Microsoft Teams
  • Teams administration including governance, policies, and compliance
  • Teams voice/calling configuration (Phone System, Direct Routing)
  • Teams PowerShell module and Microsoft Graph API
  • M