Messaging & Collaboration Engineer II

SUMMARY: The Messaging & Collaboration Engineer is responsible for the administration, security, availability, and optimization of Microsoft 365 services across Microsoft Exchange (hybrid), collaboration, compliance, archiving, and endpoint management platforms. This role supports hybrid and cloud deployments, mail flow and SMTP routing, email security and data governance controls, automates administration using PowerShell, and ensures reliable service delivery and user experience.

ESSENTIAL DUTIES AND RESPONSIBILITIES include the following. Other duties and special projects may be assigned.

• Messaging, Mail Flow & Email Security:
• Administers and supports Microsoft Exchange (hybrid), including user and shared mailboxes, distribution groups, and mail flow
• Manages Proofpoint email security services, including spam filtering, and phishing protection
• Configures and maintains Authorized Sender / Trusted Sender policies in Proofpoint and Exchange Online
• Manages allow/block lists, trusted domains, and third-party sender configurations
• Designs, configures, and supports Application Mail Relay for internal and third-party applications
• Creates and maintains mail relay connectors, authentication methods, and IP based trust relationships
• Ensures proper configuration and alignment of SPF, DKIM, and DMARC, including application and relay senders
• Troubleshoots application mail delivery issues and relay failures
• Provides Tier 2/3 support for messaging, collaboration, endpoint, and application email services
• Partners with security, networking, and application teams to troubleshoot service issues across authentication, mail flow, DNS, and client connectivity.
• Microsoft 365 Administration:
• Administers Microsoft 365 services including Exchange Online, Intune, Teams, OneDrive, and SharePoint
• Administers device enrollment, configuration, and lifecycle management
• Manages MDM and MAM for corporate-owned and BYOD devices
• Configures device enrollment methods (Autopilot, corporate-owned, BYOD)
• Creates and maintains device compliance policies, configuration profiles, and security baselines
• Manages Microsoft Purview (Security & Compliance) features including retention policies (Exchange Online retention/M365 retention), data retention requirements, and DLP.
• Develops and maintains administrative automation using PowerShell scripting across Office 365, Azure AD, Teams, and SharePoint.
• Monitors Microsoft 365 service health and manage service-related incidents
• Troubleshoot device enrollment, compliance, and access issues affecting Microsoft 365 services
• Coordinates tenant configuration changes and feature rollout
• General:
• Helps Desk ticket response, MAC (Move/Add/Change) request fulfillment, formal Change Control processes
• Maintenance and creation of team documentation and process workflows
• Other responsibilities as assigned by Management.
• Adheres to and complies with applicable, federal and state laws, regulations and guidance, including those related to anti-money laundering (i.e. Bank Secrecy Act, US PATRIOT Act, etc.).
• Adheres to Bank policies and procedures and completes required training.
• Identifies and reports suspicious activity.

EDUCATION

College degree or equivalent work experience required

EXPERIENCE

• 1-3 YearsExperience with Desired Configuration Management (DCM) tools required
• 4-6 YearsPractical experience in Information Technology and Desktop Supportrequired
• 1-3 YearsHands-on experience with Proofpoint email security, including authorized sender and relay managementpreferred
• 4-6 YearsExperience designing and supporting Application Mail Relay solutionsrequired
• 4-6 YearsExperience with Microsoft Intune and mobile device management (MDM/MAM)required
• 4-6 YearsPowerShell experience for M365, Exchange, Intune, or mail flow automationrequired
• Experience integrating third-party security solutions with Microsoft 365 (eg, Proofpoint)

KNOWLEDGE, SKILLS AND ABILITIES

• Hands-on administration of Microsoft 365 tenant services with strong operational and troubleshooting skills.
• PowerShell scripting expertise within Office 365 / Azure AD / Teams / SharePoint.
• Strong knowledge of authentication in a Microsoft hybrid environment, including modern authentication and hybrid identity patterns.
• Strong understanding of email authentication (SPF, DKIM, DMARC) and mail routing
• Strong troubleshooting, documentation, and communication skills
• Ability to build relationships between the customers and the team members
• Ability to work independently
• Self-motivated
• Ability to set own goals and manage towards them
• Strong written and oral communication skills
• Strong customer service skills
• Understanding of Microsoft 365, Windows 365, Entra, Intune, Exchange Online and MS Teams platform administration
• Understanding of common application technologies (e.g. Office 365 suite, Outlook, Copilot, Edge)

ADDITIONAL INFORMATION

• Candidates residing in locations within BankUnited's footprint may be given preference.