Senior Messaging Engineer

Digital Realty • Dallas, TX

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About The Position

The Senior Messaging Engineer is responsible for the design, implementation, operation, and security of Digital Realty’s messaging environment, with a primary focus on Microsoft 365 / Exchange Online.
The role acts as a Level 3 subject-matter expert for messaging and email security, supporting EUC operations, collaborating with Security and Infrastructure teams, and ensuring a secure, reliable, and compliant messaging service for a global user base of 5,000+ employees.
This position plays a critical role in email hygiene, deliverability, authentication, and threat protection, ensuring business continuity and protecting the organization from phishing, spoofing, and email-borne attacks.

Requirements

• 5+ years of experience in enterprise messaging engineering
• Deep expertise in Microsoft 365 Messaging and EOP
• Proven ownership of SPF, DKIM, and DMARC enforcement
• Experience designing messaging services for 5,000+ users
• Strong PowerShell skills for automation and reporting
• Proven experience leading complex incidents and changes
• Ability to work across multiple time zones with flexible availability.
• Experience in multinational organizations with diverse regulatory environments.

Responsibilities

• Own the architecture, security, and lifecycle of Microsoft 365 messaging services
• Design, implement, and enforce SPF, DKIM, and DMARC (monitoring → enforcement)
• Lead email security strategy in collaboration with Security teams
• Act as final escalation point for complex messaging, deliverability, and security incidents
• Design and maintain advanced mail flow, transport rules, and connectors
• Lead integration and optimization of Valimail and/or Proofpoint
• Drive automation using PowerShell and reduce operational overhead
• Define standards, policies, and best practices for messaging services
• Lead messaging-related projects, tenant changes, and service improvements
• Mentor and technically guide Messaging Engineers
• Represent Messaging in global IT meetings
• Drive continuous improvement through automation, AI, analytics, and self-service capabilities.
• Represent EUC services in global IT leadership forums and steering committees.
• Drive continuous improvement through automation, AI, analytics, and self-service capabilities.
• Stay informed on industry trends and emerging technologies, integrating relevant innovations into the EUC roadmap.

Benefits

• Digital Realty offers its employees a highly competitive compensation package, excellent benefits, and an environment that recognizes and rewards your contributions.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed