Sr. Systems Administrator - Exchange

Provide senior-level administration and technical ownership of Exchange Online and messaging services, ensuring reliable mail flow, strong security posture, and alignment with compliance requirements. This role is responsible for preparing and maintaining the messaging environment to securely support Microsoft Copilot and AI-driven communication capabilities.

Preferred location with hybrid work schedule: Kansas City, KS or Dallas, TX

Job Duties and Responsibilities

• Administer and maintain Exchange Online mailboxes, distribution groups, shared mailboxes, and resource mailboxes
• Design and manage mail flow architecture including connectors, routing, and hybrid configurations
• Configure and manage Microsoft Defender for Office 365, including anti-phishing, anti-malware, and safe links/attachments policies
• Maintain and govern tenant allow/block lists and advanced threat protection controls
• Troubleshoot complex mail flow, delivery failures, spoofing, and authentication issues (SPF, DKIM, DMARC)
• Automate messaging operations including provisioning, auditing, and reporting
• Support Microsoft Purview eDiscovery, retention, and legal hold processes
• Ensure email and calendar data is structured and secured appropriately for Copilot consumption and analysis
• Identify and mitigate risks related to Copilot accessing sensitive or restricted email content
• Support investigations and incident response involving messaging data and AI-driven access patterns
• Serve as Tier 3 escalation point for messaging-related incidents and outages
• Develop and maintain documentation, operational standards, and governance policies for messaging services
• Continuously assess and improve messaging security posture and hygiene
• Accurately document system changes, incidents, and configurations
• Perform other duties as assigned

• Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent combination of education and experience)
• 5-8 years of Microsoft 365 or Exchange administration experience
• Experience with Defender for Office 365 and messaging security frameworks
• Experience with messaging security, compliance, and enterprise mail environments
• Strong understanding of Exchange Online architecture and mail flow
• Advanced troubleshooting skills for complex messaging environments
• Strong analytical thinking and documentation capabilities
• Ability to balance governance, security, and user enablement
• Ability to translate technical concepts into clear, business-friendly guidance
• Ability to work independently with minimal day-to-day direction while partnering effectively across teams
• Able to travel 5-15% of the time

An Equal Opportunity Employer including Disabled/Veterans