Email / IM / Collaboration Lead (US Citizen)

Job Title: Email / IM / Collaboration LeadLocation: Milford, MA 01757Visa - US CitizenMessaging Administration and OperationsAdminister and oversee Exchange Online environments, including mailbox provisioning, retention configuration, and transport rule administration.Maintain mail flow configurations, including connectors and message routing policies.Manage shared mailboxes, resource mailboxes, distribution lists, and Microsoft 365 Groups in accordance with organizational standards.Execute advanced mailbox operations, including migrations, recoveries, litigation holds, and archive management.Advanced Troubleshooting and Tier 3 SupportDiagnose and resolve complex email delivery issues, including latency and service degradation.Troubleshoot and support hybrid Exchange environments (on-premises and cloud) to ensure continuity of service.Analyze and remediate issues related to mail routing, connectors, and DNS records (MX, SPF, DKIM, DMARC).Produce root cause analyses (RCA) and provide preventive recommendations to reduce recurrence.Email Security and ComplianceConfigure and administer Exchange Online Protection (EOP) and Microsoft Defender for Office 365.Implement, monitor, and tune anti-spam, anti-malware, and phishing protection policies to mitigate email-borne threats.Design, implement, and maintain email authentication protocols (SPF, DKIM, DMARC).Support compliance requirements, including retention policies, eDiscovery, and audit activities.Architecture and DesignLead the design and implementation of messaging solutions and service enhancements.Support migration initiatives, including on-premises Exchange to Exchange Online and cross-tenant migrations.Provide technical direction to ensure scalability, high availability, and performance optimization of the messaging platform.Contribute to transition and transformation initiatives to modernize and standardize messaging environments. Monitoring and Incident ManagementMonitor messaging services, alerts, and service health indicators to ensure operational stability.Manage major incidents (Priority 1/Priority 2) and coordinate resolution efforts with Microsoft and third-party vendors, as required.Adhere to ITIL-aligned processes for Incident, Problem, and Change Management.Automation and OptimizationDevelop and maintain automation scripts using PowerShell for Exchange Online.Streamline operational activities, including user provisioning, reporting, and mailbox management.Drive continuous improvement initiatives to enhance service efficiency and reliability. Required Technical SkillsCore Messaging TechnologiesMicrosoft 365 (Exchange Online – advanced level)Exchange Hybrid (on-premises + cloud integration)Mail flow and transport configurationSecurity & ComplianceExchange Online Protection (EOP)Microsoft Defender for Office 365Email security technologies (anti-spam, anti-virus, threat protection)SPF, DKIM, DMARC implementationDirectory & IdentityAzure AD / Entra IDActive Directory (synchronization, AAD Connect)Networking & ProtocolsSMTP, TLS, and DNS (MX and SPF records)Email routing and relay configurationsScripting & ToolsPowerShell (Exchange Online & Azure modules)Monitoring tools (M365 Admin Center, Security Center)