Exchange & Virtualization Administrator at Knowesis supporting secure messaging and virtual server environments for the DoD Inspector General. Ensuring compliance and performance of Microsoft Exchange systems.
Responsibilities
Manage and maintain Microsoft Exchange environments (on-premises and/or hybrid Office 365 GCC High)
Monitor mail flow, troubleshoot delivery issues, and ensure secure email operations
Configure mailbox policies, retention settings, and archiving in accordance with DoD OIG standards
Support eDiscovery, litigation holds, and compliance audits
Implement and maintain anti-spam, anti-malware, and email encryption solutions
Administer virtual environments using VMware vSphere, Microsoft Hyper-V, or similar platforms
Provision, monitor, and optimize virtual machines and resource pools
Perform patching, backups, and disaster recovery testing for virtual systems
Collaborate with storage, network, and security teams to ensure performance and compliance
Maintain system documentation and configuration baselines
Ensure systems meet DoD cybersecurity and access control requirements
Support vulnerability remediation and configuration hardening
Maintain audit readiness and assist with inspections and reporting
Implement role-based access controls and enforce least privilege principles
Collaborate with Active Directory, SCCM, and MDM teams to support integrated services
Provide Tier 2/3 support for messaging and virtualization issues
Participate in change management and configuration control processes
Document procedures and contribute to knowledge base development
Requirements
Bachelor’s degree in Information Systems, Computer Science, or a related field.
5+ years of experience in Exchange and virtualization administration, including experience with cloud migration projects to include virtual machine migration from on-premises to Azure, and technical expertise in Azure cloud services
Proficiency in Microsoft Exchange Server, Office 365, and virtualization platforms (VMware, Hyper-V)
Strong PowerShell scripting skills for automation and reporting
Familiarity with DoD IT security standards and compliance frameworks
Excellent troubleshooting, documentation, and communication skills.
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