Exchange & Virtualization Administrator

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Position: Exchange & Virtualization Administrator

Location: Alexandria, VA

Work Environment: Hybrid

Clearance Required: Secret

Status: Contingent Upon Contract Award

Knowesis is seeking a skilled Exchange & Virtualization Administrator to support the DoD Office of the Inspector General (OIG) in maintaining secure, high-availability messaging and virtual server environments. This role ensures the reliability, performance, and compliance of Microsoft Exchange systems and virtual infrastructure, supporting mission-critical communications and IT services across the enterprise.

To be eligible for this position, candidates must possess U.S. Citizenship without the need for sponsorship, both now and in the future. Applicants without proof of U.S. Citizenship will not be considered due to the position’s security clearance requirements.

• 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

• 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 Power Shell scripting skills for automation and reporting
• Familiarity with DoD IT security standards and compliance frameworks
• Excellent troubleshooting, documentation, and communication skills

• Certifications such as Microsoft Certified:
  Messaging Administrator Associate, VMware Certified Professional (VCP), or CompTIA Security+

• Health (PPO & HDHP) Paid Time Off
• Company Paid STD & LTD, and Basic Life Insurance
• 401k Company Match Paid Time Off
• Multiple Voluntary Products

Knowesis is committed to providing equal employment opportunities to all individuals based on merit and qualifications. We prohibit discrimination in all aspects of employment as required by Title VII of the Civil Rights Act and other applicable federal laws. Our company values all applicants and employees and fosters a work environment where everyone is treated with respect and dignity.