Senior M365 Systems Engineer (Messaging & Collaboration)

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

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

• 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
  • Meeting and live event configuration
  • Teams device administration
• M365 Platform
  • Microsoft 365 Admin Center, Security & Compliance Center, and Teams Admin Center
  • Azure AD/Entra ID administration and conditional access
  • Microsoft 365 licensing and service management
  • DLP policies and information protection across workloads
• Security & Compliance
  • Proofpoint Email Protection platform (or similar email security solution)
  • eDiscovery and content search across Exchange and Teams
  • Retention policies and records management
  • Compliance features including communication compliance and information barriers
• Scripting & Automation
  • PowerShell scripting (Exchange Management Shell, Exchange Online PowerShell, Teams PowerShell)
  • Microsoft Graph API basics
  • Automation and bulk operations scripting
  • Basic understanding of Power Automate
• Infrastructure
  • Active Directory and DNS management
  • Certificate management and PKI basics
  • Load balancers and network connectivity concepts
  • Windows Server administration

Preferred Qualifications

• Microsoft 365 Certified: Messaging Administrator Associate (MS-203)
• Microsoft 365 Certified: Teams Administrator Associate (MS-700)
• Microsoft Certified: Security, Compliance, and Identity Fundamentals (SC-900)
• Proofpoint Certified Administrator
• Experience with Enterprise Vault administration and EV-to-M365 migrations
• Experience with Power Platform (Power Automate, Power Apps)
• Knowledge of regulatory compliance frameworks (GDPR, HIPAA, SOX, etc.)
• Experience with Microsoft Teams voice/calling and Direct Routing
• GitHub/version control for script management

Desired Soft Skills

• Strong analytical and troubleshooting abilities
• Excellent documentation and communication skills
• Ability to work independently and manage multiple priorities
• Customer service orientation for end-user support
• Proactive approach to system monitoring and maintenance

Salary: $166,209 - $174,957

Additional benefits include: 

• Paid Time Off & Holiday Pay
• Medical Insurance
• Dental Insurance
• Vision Insurance
• Disability, Life Insurance, and AD&D
• Flexible Spending Accounts
• Pre-Tax 401K and/or After-Tax Roth IRA (with employer matching contribution)
• Tuition and Technical Training Reimbursement
• Exercise Reimbursement
• Computer Reimbursement
• Employee Assistance Program

About Us: 

Edgewater Federal Solutions is a privately held government contracting firm located in Frederick, MD. The company was founded in 2002 with the vision of being highly recognized and admired for supporting customer missions through employee empowerment, exceptional services and timely delivery. Edgewater Federal Solutions is ISO 9001, 20000-1, 270001 certified, appraised at CMMI Level 3 Maturity for Development and Services, and has been named in the Top Workplaces in the Greater Washington Area Small Companies for 2018 through 2025.

It has been and continues to be the policy of Edgewater Federal Solutions to provide equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, marital status, veteran status, and/or other statuses protected by applicable law.