Dunhill Professional Search & Government Solutions · 1 month ago
Systems Administrator – Accounts / Exchange
Oak Ridge, TN
Full-time
Onsite
Senior Level
$100K/yr - $124K/yr
7+ years expDunhill Professional Search & Government Solutions is seeking a Microsoft 365 / Exchange Administrator to provide Tier III IT operations support. This role focuses on managing Microsoft 365 account management, Exchange Online, and identity services, ensuring secure and compliant messaging and collaboration services.
ConsultingHuman ResourcesRecruitingStaffing Agency
No H1B
U.S. Citizen OnlyHiring Manager
Christopher Hanna
Responsibilities
Administer Azure Active Directory (Azure AD), including user lifecycle management, group policies, conditional access, MFA, and role-based access control
Manage M365 accounts and licensing, ensuring proper provisioning, de-provisioning, and compliance with organizational policies
Implement and enforce identity protection and security policies across M365 tenants
Provide Tier III support for Windows, macOS, and mobile endpoints integrated with M365 services
Administer Exchange Online mail flow, including transport rules, connectors, mailbox policies, and hybrid configurations
Manage mailbox provisioning, permissions, and retention policies
Support public folders, shared mailboxes, and distribution groups
Monitor and troubleshoot mail delivery, synchronization, and performance issues
Implement and maintain security and compliance features such as DLP, eDiscovery, audit logging, and retention
Support Microsoft Teams policies, messaging, and voice integration
Administer SharePoint Online and OneDrive for Business, including permissions, governance, and data protection
Ensure integration and interoperability across Exchange, Teams, SharePoint, and OneDrive
Continuously monitor Exchange Online and M365 services for availability, health, and performance
Detect and resolve service bottlenecks, outages, and synchronization issues in line with SLAs
Track and report on license utilization, resource consumption, and Azure/M365 cost usage
Maintain operational records such as maintenance logs, backup validation history, and tenant inventories
Maintain and update the Configuration Management Database (CMDB) with M365 and Exchange configuration items
Submit all changes via the OIM-approved change management system in accordance with the Change Control Review (CCR) process
Evaluate proposed changes for technical and cybersecurity risk, ensuring compliance with secure baselines
Document and maintain tenant policies, SOPs, and configuration records, reviewed quarterly or after major changes
Qualification
Required
U.S. Citizenship Required
Bachelor's Degree in Information Technology, Computer Science or a related field or equivalent relevant experience; Master's Degree preferred
Demonstrated technical proficiency equivalent to industry-recognized certifications, such as: Microsoft 365 Certified: Messaging Administrator Associate, Microsoft 365 Certified: Enterprise Administrator Expert, Microsoft Certified: Azure Administrator Associate, CompTIA Security+ or Network+
7-10 years of experience in information technology, systems administration or other IT related field
Proficiency in PowerShell scripting, Azure CLI, and automation tools for M365 and Exchange administration
Strong knowledge of Exchange Online, Azure AD, Teams, SharePoint Online, and OneDrive
Ability to support Windows, macOS, and mobile endpoints integrated with M365 services
Experience with hybrid Exchange environments (on-premises + cloud)
Familiarity with M365 compliance frameworks (DLP, retention, eDiscovery, audit)
Strong troubleshooting skills for mail flow, account provisioning, and identity synchronization issues
Company
Dunhill Professional Search & Government Solutions
Dunhill Professional Search & Government Solutions is an executive search and management recruiting firm.
11-50 employees
Funding
Current Stage
Early StageCompany data provided by crunchbase