Expert Systems Engineer - Req 2644

Job Title:

Microsoft Exchange Email Administrator (Hybrid – On-Premises & Online)

Position Overview

The Microsoft Exchange Email Administrator is responsible for managing, maintaining, and supporting the organization’s hybrid email environment, which includes on-premises Microsoft Exchange servers and Exchange Online in Microsoft 365. This role ensures service continuity and optimal functioning of the email and messaging services in a secure, reliable, and efficient manner across all platforms. The administrator provides technical leadership in implementing best practices, performing system upgrades, maintenance, and delivering end-user support.

Key Responsibilities

Exchange Administration & Maintenance

• Manage, configure, and maintain the organization’s hybrid Exchange environment, including on-premises Exchange Server (2016/2019/SE) and Exchange Online.
• Oversee and troubleshoot mail flow between on-premises and cloud environments to ensure seamless user experience.
• Apply patches, updates, and cumulative rollups to Exchange servers, ensuring system integrity and security.
• Monitor and optimize system performance, capacity, and reliability through regular maintenance and enhancements.
• Manage Exchange certificates and ensure proper TLS/SSL configurations.
• Administer transport rules, connectors, and TLS encryption with partner organizations.

User & Mailbox Management

• Perform recipient management for all types in a hybrid environment, including user mailboxes, shared mailboxes, resource mailboxes, distribution lists, and Microsoft 365 groups.
• Manage mailbox and calendar permissions, auditing, retention policies, sharing, mobile device mailbox policies, RBAC, role assignment policies, and archiving configurations.
• Administer Exchange Online settings via Microsoft 365 Admin Center and Exchange Admin Center.

Security & Compliance

• Configure and maintain Exchange Online Protection (EOP) and Microsoft Defender for Office 365 policies for anti-spam, anti-malware, and phishing protection.
• Manage domains and DNS records, including DKIM, SPF, and DMARC for domain authentication and email deliverability.
• Ensure compliance with organizational and regulatory policies (e.g., DLP, message encryption, and eDiscovery).
• Collaborate with security teams to investigate and resolve email-related security incidents.

Troubleshooting & Support

• Diagnose and resolve mail flow, performance, and connectivity issues, including TLS encryption with partner organizations.
• Provide Tier 2/3 support for complex Exchange-related incidents.
• Assist end-users with email client issues for Outlook, Outlook on the web, and mobile device configurations.

Qualifications

Education & Experience

• Bachelor’s degree in Information Technology, Computer Science, or related field (or equivalent work experience).
• 4–6+ years of experience administering Microsoft Exchange environments, including on-premises and Exchange Online.
• Hands-on experience managing hybrid Exchange deployments and Microsoft 365 environments.
• Strong understanding of Active Directory, Azure AD, DNS, SMTP, and mail routing.

Technical Skills

• Proficiency with Exchange PowerShell (on-premises and cloud).
• Experience with hybrid configuration wizards and Exchange connectors.
• Knowledge of Microsoft Purview (Compliance Center), retention policies, and email archiving.
• Familiarity with Microsoft Defender and spam gateways for anti-spam, anti-malware, and phishing protection.
• Understanding of security and authentication protocols (TLS, OAuth, OpenID, MFA, S/MIME).
• Knowledge of load balancing and high availability configurations for Exchange servers.

Certifications (Preferred)

• Microsoft Certified: Messaging Administrator Associate
• Microsoft 365 Certified: Enterprise Administrator Expert
• CompTIA Security+ or equivalent